Quiz Discussion

The SQL ALTER statement can be used to

Course Name: SQL -Structured Query Language

  • 1]

    Change the table structure

  • 2]

    Change the table data

  • 3]

    Add rows to the table

  • 4]

    Delete rows from the table

Solution
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# Quiz
1
Discuss

‘AS’ clause is used in SQL for

  • 1]

    Selection operation

  • 2]

    Rename operation

  • 3]

    Join operation

  • 4]

    Projection operation

Solution
2
Discuss

Which of the following is a comparison operator in SQL?

  • 1]

    =

  • 2]

    LIKE

  • 3]

    BETWEEN

  • 4]

    All of the above

Solution
3
Discuss

Which one of the following is not true for a view

  • 1]

    View is derived from other tables

  • 2]

    View is a virtual table

  • 3]

    A view definition is permanently stored as part of the database

  • 4]

    View never contains derived columns

Solution
4
Discuss

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

  • 1]

    Alter

  • 2]

    Update

  • 3]

    Create

  • 4]

    Select

Solution
5
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
6
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
7
Discuss

What is an advantage of placing computations in SQL views

  • 1]

    To save users from having to write an expression

  • 2]

    To ensure that the results are consistent

  • 3]

    To accomplish both of the above

  • 4]

    None of the above

Solution
8
Discuss

Which is NOT one of the most common types of SQL CHECK constraints?

  • 1]

    System date

  • 2]

    Range checks

  • 3]

    Lists of values

  • 4]

    Comparing one column value to another within the same table

Solution
9
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
10
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
# Quiz