Q.1.
SQL is a data sublanguage.
Q.2.
The qualifier DISTINCT must be used in an SQL statement when we want to eliminate duplicate rows.
Q.3.
DISTINCT and its counterpart, ALL, can be used more than once in a SELECT statement.
Q.4.
There is an equivalent join expression that can be substituted for all subquery expressions.
Q.5.
A dynamic view is one whose contents materialize when referenced.
Q.6.
SQL is a programming language.
Q.7.
SELECT DISTINCT is used if a user wishes to see duplicate columns in a query.
Q.8.
Indexes can usually be created for both primary and secondary keys.
Q.9.
The ADD command is used to enter one row of data or to add multiple rows as a result of a query.
Q.10.
SQL provides the AS keyword, which can be used to assign meaningful column names to the results of queries using the SQL built-in functions.
Q.11.
The SQL keyword BETWEEN is used:
Q.12.
The SELECT command, with its various clauses, allows users to query the data contained in the tables and ask many different questions or ad hoc queries.
Q.13.
A SELECT statement within another SELECT statement and enclosed in square brackets ([...]) is called a subquery.
Q.14.
A subquery in an SQL SELECT statement:
Q.15.
________ was adopted as a national standard by ANSI in 1992.
Q.16.
The rows of the result relation produced by a SELECT statement can be sorted, but only by one column.
Q.17.
SQL is:
Q.18.
The condition in a WHERE clause can refer to only one value.
Q.19.
Which one of the following sorts rows in SQL?
Q.20.
To sort the results of a query use: