Quiz Discussion

Which of the following is correct

Course Name: SQL -Structured Query Language

  • 1]

    a SQL query automatically eliminates duplicates

  • 2]

    SQL permits attribute names to be repeated in the same relation

  • 3]

    a SQL query will not work if there are no indexes on the relations

  • 4]

    None of these

Solution
No Solution Present Yet

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# Quiz
1
Discuss

Which of the following is a valid SQL type?

  • 1]

    CHARACTER

  • 2]

    NUMERIC

  • 3]

    FLOAT

  • 4]

    All of the above

Solution
2
Discuss

Which of the following is an advantage of view?

  • 1]

    Data security

  • 2]

    Derived columns

  • 3]

    Hiding of complex queries

  • 4]

    All of the above

Solution
3
Discuss

What SQL structure is used to limit column values of a table?

  • 1]

    The LIMIT constraint

  • 2]

    The CHECK constraint

  • 3]

    The VALUE constraint

  • 4]

    None of the above

Solution
4
Discuss

‘AS’ clause is used in SQL for

  • 1]

    Selection operation

  • 2]

    Rename operation

  • 3]

    Join operation

  • 4]

    Projection operation

Solution
5
Discuss

The statement in SQL which allows changing the definition of a table is

  • 1]

    Alter

  • 2]

    Update

  • 3]

    Create

  • 4]

    Select

Solution
6
Discuss

Views constructed from SQL SELECT statements that conform to the SQL-92 standard may not contain

  • 1]

    GROUP BY

  • 2]

    WHERE

  • 3]

    ORDER BY

  • 4]

    FROM

Solution
7
Discuss

To delete a particular column in a relation the command used is

  • 1]

    UPDATE

  • 2]

    DROP

  • 3]

    ALTER

  • 4]

    DELETE

Solution
8
Discuss

Which of the following is an SQL trigger supported by Oracle?

  • 1]

    BEFORE

  • 2]

    AFTER

  • 3]

    INSTEAD OF

  • 4]

    All of the above

Solution
9
Discuss

The language which has recently become the defacto standard for interfacing application programs with relational database system is

  • 1]

    Oracle

  • 2]

    SQL

  • 3]

    DBase

  • 4]

    4GL

Solution
10
Discuss

What is not an advantage of stored procedures?

  • 1]

    Greater security

  • 2]

    SQL can be optimized

  • 3]

    Code sharing

  • 4]

    Increased network traffic

Solution
# Quiz