A RDBMS maintains a description of all the data that it contains, information about every relation and index that it contains. This information is stored in a collection of relations maintained by the system called metadata. It is also called data dictionary.
The Delete Statements
Which system tables contain information on privileges granted and privileges obtained?
What is use of CASCADE CONSTRAINTS?
The INSERT INTO Statements
Which command displays the SQL command in the SQL buffer, and then executes it?
What will be the output of following query?
What operator tests column for absence of data?
What is the difference between TRUNCATE and DELETE commands?
What does the following query do?
State true or false. EXISTS, SOME, ANY are operators in SQL?
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