What are triggers? How many triggers you can have on a
table?
Answers were Sorted based on User's Feedback
Answer / shanky
Triggers are PL/SQL blocks which are executed implicitly
based
on database events.
Is This Answer Correct ? | 4 Yes | 0 No |
Answer / guest
Triggers are PL/SQL blocks which are executed implicitly based
on database events.
Is This Answer Correct ? | 4 Yes | 3 No |
If a column is an image value type, how you can compare column values? How can you use this column in join clause?
Explain the role of indexing in databases?
What are the types of database model?
How would you design a database for an online site, which would average a million hits a day?
Explain about a primary key?
how to find the first two highest salaries in deptno in emp table
Explain about the storage and physical database design?
A) Which two are benefits of Teradata's support for ANSI Standard SQL? (Choose two.) 1.data is distributed automatically 2.queries get optimized to better plans 3.submit queries from other database systems 4.can interface with BI tools B) Which statement is true when comparing the advantages of third normal form to star schema? 1.Star schema tends to have fewer entities. 2.Star schema requires additional data storage. 3.Third normal form tends to have fewer entities. 4.Third normal form requires additional data storage. C)Which two sets of functions does the Parsing Engine (PE) perform? (Select two.) 1.sorting, formatting, and aggregating of the final answer set 2.flow control of the data to and from the participating tables 3.SQL statement interpretation, syntax validation, and semantic evaluation 4.dispatching the step execution sequence to the AMP via the BYNET D) Which two can be achieved with Teradata Active System Management (TASM)? (Choose two.) 1.disable hardware 2.react to hardware failure 3.influence response times 4.collect metadata E) Which three mechanisms can be used to ensure security within the Teradata Database? (Choose three.) 1.views 2.spool limits 3.roles 4.access rights 5.profiles
What is the difference between a primary index and a secondary index? What is a duplicate data entry in an index? Can a primary index contain duplicates?
what is Normalization?
What is an extended stored procedure?
What is denormalization and when would you go for it?