question In Oracle what is the purpose of the GROUP BY clause

What is the purpose of the Oracle NVL() function?

A. Concatenate multiple columns
B. Replace NULL values with a specified value
C. Calculate the average value
D. Concatenate multiple rows

What is the purpose of the SQL Server XML INDEX option?

A. Index an entire XML column
B. Index specific elements or attributes in an XML column
C. Exclude XML columns from indexing
D. Disable indexing for XML columns

In Oracle, what is the purpose of the MERGE statement?

A. Combine rows from two or more tables
B. Update, insert, or delete data based on a condition
C. Sort the result set
D. Join multiple tables

In Oracle, what is the purpose of the GROUP BY clause?

A. Filter rows
B. Sort the result set
C. Combine rows into groups
D. Join multiple tables

What is the purpose of the Oracle DUAL table?

A. Store binary data
B. Store XML data
C. Provide a one-row, one-column table for selecting expressions
D. Store numeric values

In SQL Server, what is the purpose of the TRY_CONVERT() function?

A. Concatenate multiple values
B. Convert a value to a different data type and handle errors gracefully
C. Find the average value
D. Validate XML structure

In Oracle, what is the purpose of the ROLLBACK statement?

A. Save changes to the database
B. Undo changes made during the current transaction
C. Commit changes to the database
D. Delete records from the database

Which Oracle statement is used to grant all privileges to a user?

A. GRANT ALL PRIVILEGES
B. GRANT FULL ACCESS
C. GRANT SUPERUSER
D. GRANT ALL RIGHTS

In SQL Server, what is the purpose of the PARSE() function?

A. Concatenate multiple columns
B. Parse a string into a specified data type
C. Calculate the average value
D. Generate a sequence of numbers

Which SQL Server statement is used to create a stored procedure?

A. CREATE PROCEDURE
B. NEW PROCEDURE
C. ADD PROCEDURE
D. INSERT PROCEDURE

Database MCQS - QUESTION DETAILS

Similar Questions

General

Subject Wise