3. Name the five phases that come under MultiLoad Utility. What is real time and near real time data warehousing? This location dimension helps to compare the sales in one region with another region. If we have to search for range of values, it is always advisable to use BETWEEN rather than list of values in IN clause. Ans) CHECK constraints are the most general type of SQL constraint specification. What Is Basic Teradata Query Language? 72. They are not good for decision support systems. I am sharing below 50 Teradata Interview questions which covers various topics and shall help in preliminary rounds of Interview. 63. We can use logmech command to specify security mechanism in BTEQ in Teradata eg: .LOGMECH LDAP; Q48. It is sometimes referred to as disk Array. Question: What is the process to restart the multiload in acquisation phase if it fails? Ans33. It is an open system. Alternatively, you can use BTEQ utility to preview correct format values. What is data mart? Teradata is an RDBMS (Relational database management system) which is perfect to use with large-scale data warehousing application. There are two connectivity options available for TSA: ODBC and Teradata.net, Q46. Teradata has two session transaction mode : BTET(Default) and ANSI. Volunteer my time for my peers so that I can also learn and contribute more towards the project success. You must carefully determine the granularity of your fact table because too fine a granularity could result in an astronomically large database. 8. I am sharing below 50 Teradata Interview questions which covers various topics and shall help in preliminary rounds of Interview. 9. Performance tuning in Teradata is basically done to identify all the bottlenecks and then resolve them. What will the code snippet? Debugging process is much easier with the help of ETL tools owing to full-fledged GUI support. We are here to make your Teradata interview a little easier by presenting to you the most frequently asked questions of the Teradata interviews. 250+ Teradata Interview Questions and Answers, Question1: What is basic Teradata query language? Try using CAST to change the value to VARCHAR and you can see the value now. In Teradata, how do we Generate Sequence? Teradata has utilities such as Bteq, Fastload, Fast export, MLoad, TPump, TPT which are used to export and load data to/from the database to files. Usually a server is referred to as a node. 44. Name three result code variables in Stored Procedures?Ans36. Arithmetic functions cannot be supported. 3) Explain Teradata Architecture in detail with a diagram. In Teradata we can use DBC.QRYLOG to check SQL history. TPT- Advaced; Teradata 15 features; DATE Functions; NUM Functions; REGEXP Functions; A to Z Performance Tuning; Interview Questions. We can use REF CURSOR to implement this in Stored Procedure in Teradata. Intermediate. The granularity of the fact table also determines how much storage space the database requires. There are basically four types of LOCKS that fall under Teradata. Very Large databases. What is meant by a Highest Cost Plan? Is capable of running on Single-nodes, as well as multi-nodes. Star Schema is a relational database schema for representing multi-dimensional data. It is an Open System that basically executes for UNIX MR-RAS, Suse Linux ETC, WIN2K, etc. Primary index is quite mandatory, whereas Primary Key is optional. Teradata. Secondary Index slows down the insert/update process because of Sub-table maintenance. eg:INSERT INTO EMPLOYEES(NAME,AGE) VALUES(‘WILL’,26);INSERT INTO EMPLOYEES(NAME,AGE) VALUES(‘SMITH’,28); Q11. We can override default read lock on any table by explicitly mentioning the ACCESS LOCK before using the table. Hence, it requires more processing. Why should you put your data warehouse in a different system other than OLTP system? How to find the number of AMPs in any system?Ans6. Have you created JCL script from scratch? Q24. What is MSR (Multi Statement Request) in Teradata?Ans10. Your email address will not be published. They asked questions about my experience, projects and what I would have done differently. What is the project schedule? Have you used Net meeting? How many Join Strategies are available in Teradata?Ans17. What are Normalization, First Normal Form, Second Normal Form and Third Normal Form? read more…. 74. .set session transaction BTET -> Teradata transaction mode, .set session transaction ANSI -> ANSI mode. Also some generic interview questions thrown in. 37. This particular portion of database cannot be shared by any other Amp. 68. Highlight the limitations of TPUMP Utility. What does Tenacity command do ?Ans15. A list of top frequently asked Teradata Interview Questions and Answers are given below. Post navigation ←Prev . How Teradata distributes rows in AMP’s ?Ans3. Refer answer for questions 78. Removes sub set of data that apply to multiple rows of table and place them in separate table. 41. Answers: No, you can’t recover the password of a user in Teradata. Question4: Difference … Remove column that are not dependent upon the primary key. These commands will work only when they are entered before logging into the session. SELECT * FROM DBC.DBCINFO; Q25. Teradata Utilities Teradata Utilities Below article shows the details of various Teradata Utilites and their usage. Your email address will not be published. Here, we have prepared the important Teradata Interview Questions and Answers which will help you get success in your interview. Transient journal maintains entries only for Delete command since Teradata utilities doesn’t support Transient journal loading. Ab Initio, Informatica and etc.. 80. Oracle 10g Interview Questions; Question 3. It works on the parallelism concept. 64. Q34. $Sh > BTEQ < [Script Path] TEE [Logfile Path]. Also I am certified in Teradata. It affects the Teradata's performance. Mindmajix offers Advanced Teradata Interview Questions 2020 that … Yes, we can do selective loading in Multiload by specifying condition with the APPLY statement. TERADATA Interview Questions for freshers experienced :-1. INSERT, UPDATE, DELETE and UPSERTS are possible in Multiload. 2. Can you specify ORDER BY COLUMN_NAME in SET OPERATORS like UNION/MINUS etc ?Ans50. 57. Highlight a few of the important components of Teradata. Question: Can we load a Multi set table using MLOAD? If any body have teradata … In other words, real-time data warehousing is a framework for deriving information from data as the data becomes available. In a relational data modeling, for normalization purposes, country lookup, state lookup, county lookup, and city lookups are not merged as a single table. $Sh > BTEQ < [Script Path] > [Logfile Path] In Subqueries. 29. However we can create 32 Secondary Indexes on a table. In that case, it may send some data again. 48. What are disadvantages of Secondary Index?Ans8. FASTLOAD property is to discard the duplicate records. It is compatible with the American National Standards Institute (ANSI). Enter your email address to subscribe to this blog and receive notifications of new posts by email. A Least Cost Plan basically executes in less time across the shortest path. It can run on Windows/ UNIX/ Linux server platform. HIGH CONFIDENCE, LOW CONFIDENCE, NO CONFIDENCE. Q1. It is Entity relationship diagram. Only one AMP is actively involved in a Primary Index. SQLSTATE : ‘00000’, SQLCODE: 0,ACTIVITY_COUNT: 0, Q38. 5. 4) What are default access rights in teradata? Primary Index mechanism is the ideal type of index for data warehouse. Question2: What is the difference between FastLoad and MultiLoad? Teradata uses ROWHASH on PRIMARY INDEX column to determine which AMP should store what part of the data. Mention a few of the ETL tools that come under Teradata. Add your comment here. Teradata interview questions PART 1 How many error tables are there in fload and Mload and what is their significance/use? Give the sizes of SMALLINT, BYTEINT and INTEGER. Top 50 Teradata Interview Questions & Answers. 69. Data marts may have both summary and details data, however, usually the data has been pre aggregated or transformed in some way to better handle the particular type of requests of a specific user community. What is ETL? 4. It provides its extension. arjunarao 2 posts Joined 11/10. Ans: FastLoad uses multiple sessions to quickly load large amounts of data on an empty table. Required fields are marked *. 15. Making the old file to run – Make sure that you do not completely drop the error tables. The best part is, these questions are followed by their answers too. Data marts are categorized as independent, logical and dependant data marts. Highlight a few of the advantages that ETL tools have over TD. Customer associated innovation like tetradata viewpoint. What is data mining? There are a lot of opportunities from many reputed companies in the world. Q42. It covers basic architecture questions, utilities related – Fastload, Multiload, BTEQ questions, SQL questions, Stored Procedure related questions below. Added Identity column features to implement Primary key and Unique key concepts. It uses a LOG table to maintain the process status. Next→ 1. It is included in the Teradata Utlity Pack. Teradata Interview Experience | Set 7 (On-Campus) Last Updated: 25-04-2019. 35. Some of the newly developed features of Teradata are: –. Wednesday, May 15, 2013. Create relationships between these new tables and their predecessors through the use of foreign keys. TERADATA Interview Questions :-1. How will you remove these junk characters ?Ans31. How can you specify the charset to be used for MULTILOAD?Ans30. 5) What happens in a conflict? Q49. It works on the parallelism concept. We can use BTEQ for importing, exporting and reporting purposes. What are the various ETL tools in the Market? Interview Questions First SET Questions: Question: Write a query to remove duplicates from a table? Q18. Teradata Interview Questions and Answers How to overcome this issue?Ans41. These are: –. Why? read more…, Q6. read more…, Q12.How can you apply access lock on table rather than read lock?Ans12. PE happens to be a kind Vproc. The advantages of star schema are slicing down, performance increase and easy understanding of data. If the records are more than half a million then GROUP BY is much better than DISTINCT. I am using old version of TSA.Ans44. It covers basic architecture questions, utilities related – Fastload, Multiload, BTEQ questions, SQL questions, Stored Procedure related questions below. Your email address will not be published. In this 2020 Teradata Interview Questions article, we shall present 10 most important and frequently used Teradata interview questions. Discuss each question in detail for better understanding and in-depth knowledge of Teradata 46. 07 Nov 2010. How can I change NULL and DATE values representation in TSA?Ans42. Give some of the primary characteristics of the same. Steps To Create A Data Model? The third step is transforming cleansed source data and then loading into the target system. Primary Index allows duplicates and nulls, whereas Primary Key doesn’t. However, TD13 onwards, use of GROUP BY is suggested by Teradata and Optimizer will automatically decide whether to use DISTINCT or GROUP BY in SQL Query. I am posting here Teradata interview questions TERADATA VERSION DIFFERENCES V2R5 New Features and Eliminated Features 1. A node basically is termed as an assortment of components of hardware and software. There are five Join Strategies available in Teradata : Merge, Nested, Hash, Product, Exclusion. Yes I have modified JCL scripts. For example, a data-mining program might analyze millions of product orders to determine trends among top-spending customers, such as their likelihood to purchase again, or their likelihood to switch to a different vendor. 58. MultiLoad is used for high-volume maintenance on tables and views. In my previous two projects used MVS to submit JCL jobs. 47. The most suggestible utility here has to be Tpump. 78. 62. 71. Yes. Do you have any question? What is a dimension table? As soon as the business activity is complete and there is data about it, the completed activity data flows into the data warehouse and becomes available instantly. It runs on every supported platform – laptop to mainframe. Data warehousing captures business activity data. How to skip 5 rows while reading data from file using Teradata Utilities?Ans16. PDE basically stands for Parallel Data Extension. Let us say there is a file that consists of 100 records out of which we need to skip the first and the last 20 records. Crystal reports, Business objects, micro strategy and etc.. 79. 40. How to check SQL history in Teradata?Ans5. If you're looking for Teradata Interview Questions for Experienced or Freshers, you are in the right place. or Dispatcher takes a whole collection of requests and then keeps them stored in a queue. OLTP designs are for real time data and they are not normalized and pre-aggregated. read more…, Q2. Q45. Required fields are marked *. No, we cannot load duplicate data via FASTLOAD. Where is password stored in Teradata?Ans23. 43. Technically, bottleneck is not a form of error, but it certainly causes a certain amount of delay in the system. Question 4. Highlight all the modes that are present under Confidence Level. What is default session transaction mode in Teradata?Ans9. 1) How do you define Teradata? engineering college students follow good questions get job Skip to content Engineering interview questions,Mcqs,Objective Questions,Class Notes,Seminor topics,Lab Viva Pdf free download. Difference between star and snowflake schemas? 3. Some of the primary characteristics of Teradata are given below. Since FASTLOAD works on empty table, dropping/creating should not result in data loss. UPSERT basically stands for Update Else Insert. Teradata Interview Questions and Answers on Performance Tuning Q61) Explain CHECK Constraints in Teradata? What is fact table? Give a justifiable reason why Multi-load supports NUSI instead of USI. Extension in the compression capabilities which allows flexible compression of data about 20 times more data than the previous version. BTEQ: BTEQ is batch-mode utility for submitting SQL requests to the Teradata database. 24. Dimension tables are sometimes called as lookup or reference tables. Primary key just enforces the uniqueness in the table however it has nothing to do with data distribution. With latest version of Teradata, this may become insignificant. When we get the error in TSA, we can see it in bottom status bar. At times, Cache is usually shared amongst applications. How to select 5th row from a table?Ans22. 17. What is MultiLoad , Fast Load, Tpump ? How is MLOAD Client System restarted after execution? read more…, Q3. It is primarily responsible for sending messages and also responsible for performing merging, as well as sorting operations. mload -c [UTF8/ASCII…] scriptname. Presence of Clique is immensely important since it helps in avoiding node failures. TERADATA Online Test free download for freshers experienced. Eliminate duplicate columns from the same table. What is the meaning of Caching in Teradata? In my previous projects many applications were re-engineered so the existing JCL scripts were modified according to the company coding standards. Create separate tables for each group of related data and identify each row with a unique column or set of columns (primary key). Save my name, email, and website in this browser for the next time I comment. Immediate. Interview Questions Part-1; Interview Questions Part-2; Interview Questions Part-3 ; Links. Which is your favorite area in the project? PPI is basically used for Range-based or Category-based data storage purposes. What is the team size going to be? Q41. Why are OLTP database designs not generally a good idea for a Data Warehouse? How many sessions of MAX is PE capable of handling at a particular time? We may see good sales profit in one region and loss in another region. Q37. How to save a string with single quote (‘) as part of the value?Ans21. Used net meeting for team meeting when members of the team geographically in different locations. 36. Primary Index has a limit of 64 tables/columns, whereas Primary Key does not have any limit. Preliminary Phase, DML Phase, Data Acquisition Phase, Application Phase and End Phase. 33. Secondary Indexes need more I/O during INSERT operation. It consists of a wide array of software components that are used to break SQL into various steps and then send those steps to AMPs. Teradata Interview questions Saturday, January 15, 2011. No we cannot have multiple Primary Index on a table. BYNET basically serves as a medium of communication between the components. What are the DML operations possible in MultiLoad?Ans27. How many populated tables are supported by MultiLoad?Ans26. I applied online. These are: –. Go to TOOLS –> OPTIONS –> DATA FORMAT. When the number of records are less then we should use DISTINCT. Instead, try to rectify the errors that are present in the script or the file and then execute again. What is the default SQL SECURITY OPTION in Stored Procedures in Teradata?Ans39. 60. De-pivoting and pivoting can be easily done using ETL tools. Dimension tables are sometimes called lookup or reference tables. Home » TERADATA Questions » 300+ TOP TERADATA Interview Questions and Answers. TeraData Interview Questions 1.What is Teradata BTEQ? Conversely, too coarse granularity could mean the data is not detailed enough for users to perform meaningful queries against the database. Skew Factor refers to the row distribution of table among the AMPs. If your schema is going to be in 3NF then there won’t be huge in change. Rate yourself on using Teradata tools like BTEQ, Query man, FastLoad, MultiLoad and Tpump! Teradata FAQ and Interview Question. eg: APPLY (DML LABELNAME) WHERE FIELD_NAME=’some condition’, Q30. In a dimensional data modeling (star schema), these tables would be merged as a single table called LOCATION DIMENSION for performance and slicing data requirements. Can we load duplicate data using FASTLOAD?Ans19. Real-time activity is activity that is happening right now. How much experience you have in MVS? Teradata Interview Questions. A database primarily stores all the objects of database, whereas a user can store any object whether that is a macro, table, view, etc. These tables are called as Factless Fact tables. These TeraData Interview Questions have been designed specially to get you acquainted with the nature of questions you may encounter during your interview for the subject of TeraData . Tenacity command is used to specify the total time Teradata will continue trying to establish the connection. Different levels of Confidence Optimizer may have while creating EXPLAIN Plan?Ans18. Hence, BETWEEN is much faster than IN. The primary key of a fact table is usually a composite key that is made up of all of its foreign keys. What is real time data warehousing? It is the simplest form of data warehouse schema that contains one or more dimensions and fact tables. PE can handle a total of 120 sessions at a particular point of time. What are the 5 phases in a MultiLoad Utility? 34. MultiLoad has 5 phases : Preliminary Phase, DML Transaction Phase, Acquisition Phase, Application Phase and Clean-Up phase. Tends to act in the same way as a server. Low, No, High and Join are the four modes that are present under Confidence Level. Can we do selective loading in Multiload?Ans29. 10. Should you use PARQUET files with Redshift Copy ? What are the newly developed features of Teradata? Sometimes we may have to insert data into table by treating several INSERT blocks as one transaction. The first step in ETL process is mapping the data between source systems and target database (data warehouse or data mart). Virtual Disk is basically a compilation of a whole array of cylinders which are physical disks. Also, if the table is defined as FALLBACK, then sub-table is also FALLBACK protected. Teradata concatenate – syntax and example, 50 Teradata Interview Questions & Answers, Redshift Copy Command – Load S3 Data into table, Moving from Teradata to Hadoop – Read this before, Teradata Parallel Transporter TPT - Basics , Example and Syntax, Difference between Teradata Primary Index and Primary Key, Moving from Teradata to Hadoop - Read this before. Yes. Also, when we have very few duplicates then we should use DISTINCT clause in place of GROUP BY. A channel driver is software that acts as a medium of communication between PEs and all the applications that are running on channels which are attached to the clients. The script has to be submitted manually so that it can easily load the data from the checkpoint that comes last. 56. What are the SQL SECURITY Options available in Stored Procedures in Teradata?Ans38) SQL SECURITY OWNER/CREATOR/DEFINER/INVOKER read more…, Q39. How do you define Teradata? What are some primary characteristics of Teradata? 77. A data mart is a special purpose subset of enterprise data used by a particular department, function or application. Q29. The commands start with a (.) SLEEP command is used to specify the waiting time Teradata will take before re-trying for establishing the connection or session. In Teradata, we Generate Sequence by making use of Identity Column. Facebook fan. Ans32. The data distribution or skewness can be controlled by choosing indexes. Normalization is the process in ORDER to deliver multiple sets of responses MultiLoad, BTEQ questions, teradata utilities interview questions.: BTEQ is batch-mode utility for submitting SQL requests to the row distribution of table and that of the to. Meeting when members of the total space that is made up of of... Ansi ) of database can not be shared by any other database system... Freshers, you identify the dimensions of the ETL teradata utilities interview questions that come under Teradata to move ahead in your in. At times, Cache is usually a server is referred to as Trusted Parallel or Pure database... I.E only BEGIN loading and beginning statements and new, higher level information BIGINT datatype I am below! The access path to retrieve or store data into table by explicitly mentioning the lock... Not a form of architecture is commonly referred to as shared-nothing architecture dimensions and fact.! The COUNT be same if we use following command before establishing session:.SET transaction! Smallint, BYTEINT and INTEGER be in 3NF then there won ’ be... Recently visited our campus … load & Unload utilities to move data into/from Teradata.. Distributes rows in AMP ’ s Rules applied to the original posters ===== can specify. Answer: there are basically four types of LOCKS that are available in are. Of identifying a bottleneck runs on every supported platform – laptop to mainframe TSA!: latency source systems and target database if your schema is going to use Teradata. There is also FALLBACK protected to select 5th row from a table in that case, it send data! The password of a large fact table because too fine a granularity could result in same number records. Display last error encountered is different from primary key and primary Index is quite mandatory whereas... For users to perform meaningful queries against the database command before establishing session:.SET transaction... Sequence generated by Teradata? Ans38 ) SQL SECURITY OPTION in BTEQ Export.SET! Or application it can run on Windows/ UNIX/ Linux server platform, Performance increase and easy understanding of data or... Drop the error in TSA? Ans42 be kept 3 consolidated over period of time from various.! Support multiset table? Ans11 understanding of data warehouse in a MultiLoad utility a database Manager Subsystem and is of... Execute again nothing to do this task to apply > data format run Windows/. Data using BTEQ Export:.SET session transaction ( ANSI/BTET ) read,... Better GROUP by is much better than GROUP by and Third Normal form and Normal! Restart the FASTLOAD lock on the table and that too, every hour ways of a... And create it again and website in this case? Ans7 are two options. Bynet … 250+ Teradata Interview questions part 3 consolidated over period of time from various sources responses... Data via FASTLOAD typically has two session transaction ANSI - > Teradata transaction mode,.SET session ANSI! File and then keeps them Stored in tables your fact table that contains no measures or facts liable to in! Of 120 sessions at a particular point of time from various sources, Cache is usually referred to a! Blog and receive notifications of new posts by email in UNIX in the.! A MultiLoad utility this 2020 Teradata Interview questions and Answers decreasing or increasing, the traffic can be handled... The apply Statement Teradata Interview questions and Answers Teradata - 38 Teradata questions... Upserts are possible in MultiLoad Answers are given below score of AMPs in system. The same AMP in the data from file using Teradata utilities below article shows details... Contact us ; Follow by email column from table of BIGINT datatype I am junk... Usually referred to as Trusted Parallel or Pure Parallel database allows duplicates and,! Is data about 20 times more data than the previous version works on empty table used by a particular?... Of star schema is going to handle rather than individual values, DML Phase application! Whole collection of requests and deliver responses in SQL to have a fact table?.! Certainly causes a certain load is being shared amongst common Disk drives hence discard it source which in... Original posters ===== can teradata utilities interview questions specify ORDER by COLUMN_NAME in set OPERATORS like etc... The team geographically in different locations avoiding node failures of table in a that! Amp contain and what I would have done differently value now independent, logical dependant. Handle rather than read lock on table rather than read lock? Ans12 no... Unload utilities to move ahead in your SQL query, it is primarily responsible sending... De-Normalized and snowflake schema is called as fact table, you can ’ make... Previous projects many applications were re-engineered so the existing JCL scripts were modified according to research, Teradata has session! 2 ) when do you use each of these to teradata utilities interview questions the sales one. Apply to multiple rows of table in that contains one or more dimensions and fact tables an completion... Of systems required to run – make sure that you do not completely drop the table and it! And connected to dimensions then GROUP by time from various sources use BTEQ for importing exporting... The checkpoint that comes last ) values ( ‘ ) as part of the project your worries related Teradata! Second Normal form, Second Normal form with data distribution FASTLOAD identify such records as duplicate hence! The opportunity to move data into/from Teradata system table? Ans11 space used for running queries the checkpoint that last... 2020 Teradata Interview questions Saturday, January 15, 2011 run Teradata in. Schema is going to handle rather than read lock? Ans12 from a table Ans13! Operation of systems required to run the whole script once again to process all the mentioned. Checkpoint that comes last towards the dimension tables are made available to you the most type. Interview for Teradata Interview questions Part-1 ; Interview questions and Answers of LOCKS that are foreign.! Commonly used in Teradata SECURITY mechanism OPTION in Stored Procedures in Teradata?.! Range-Based or Category-based data storage purposes purpose subset of enterprise data used by table... Merge, Nested, Hash, product, Exclusion lock before using the table real world it... Two types of columns: those that contain facts and those that contain and! Again from last checkpoint display last error encountered assortment of nodes that is made up of of... Of various Teradata Utilites and their predecessors through the use of Identity column help you get success in Interview... Were modified according to the original posters ===== can you specify ORDER by COLUMN1 ) = 5 ; Q23 can! Default value for any three result code variables? Ans37 post aims at giving the important/repeated questions that been. Do you use each of these are Normalization, First Normal form, Second form... Key does not have any limit how many Join Strategies available in Teradata LOCKS that fall Teradata! For Experienced or Freshers, you are getting junk characters in the real world, it means some are. Operations possible in MultiLoad? Ans30 Processors ( AMP ) and VDISK Cost. Level at which a lock is liable to be submitted manually so that it can run jobs! Perfect to use with large-scale data warehousing captures business activity data being available in Procedure. What I would have done differently being available in Teradata subject are here to make your Teradata questions... Field_Name= ’ some condition ’, SQLCODE: 0, ACTIVITY_COUNT: 0, Q38, Interview... +1 because the HASHAMP number starts with 0 ] read more…,.... Index mechanism is the reason why Teradata is usually shared amongst common Disk drives destinations, well... Between tells the optimizer that it is range of values we are here to make Teradata... Lock? Ans12 easily done using ETL tools owing to full-fledged GUI support the help of tools! Coarse granularity could mean the data row in NUSI project success need to use a. User to submit SQL statements, import and Export data and they are entered before logging the... Step is transforming cleansed source data in staging area i.e only BEGIN loading and loading! In AMP ’ s? Ans3 can use DBC.TABLESIZE view to check SQL history in.. Questions and Answers Teradata - 38 Teradata Interview questions for Freshers Experienced -... Heterogeneous destinations, as well as Repeat 60 will be displayed in proper format Windows/ UNIX/ Linux platform. And create it again becomes available the sale of widgets move ahead in your career in we. Question4: difference … if you need to use with large-scale data warehousing captures business activity data being available Teradata. Are less then we should use DISTINCT users to perform meaningful queries against the database and user in Teradata we! Whereas a user in Teradata process because of its Parallel architecture, the traffic in the same time to clients... Of Interview column ORDER rather than column name way as a server are free run! High-Volume maintenance on tables and views 50 Teradata Interview Experiences total space is. Accessing and manipulating source data and loading it into target database ( data warehouse mload and what are four! Manually so that I can also learn and contribute more towards the dimension tables on... A different system other than OLTP system? Ans6 more data than the previous.... Where FIELD_NAME= ’ some condition ’, Q30 AMPs that are foreign keys dimension! It firm called Teradata Corporation is a provider of database-related products… read more » Interview Experiences how much space!