Quiz Discussion

The ______ clause allows us to select only those rows in the result relation of the ____ clause that satisfy a specified predicate.

Course Name: SQL -Structured Query Language

  • 1]

    Where, from

  • 2]

    From, select

  • 3]

    Select, from

  • 4]

    From, where

Solution
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# Quiz
1
Discuss

Which one of the following is procedural language?

  • 1]

    Domain relational calculus

  • 2]

    Tuple relational calculus

  • 3]

    Relational algebra

  • 4]

    Query language

Solution
2
Discuss

The ________ clause is used to list the attributes desired in the result of a query.

  • 1]

    Where

  • 2]

    Select

  • 3]

    From

  • 4]

    Distinct

Solution
3
Discuss
SELECT * FROM employee WHERE dept_name="Comp Sci";

In the SQL given above there is an error . Identify the error.

  • 1]

    Dept_name

  • 2]

    Employee

  • 3]

    “Comp Sci”

  • 4]

    From

Solution
4
Discuss

In SQL the spaces at the end of the string are removed by _______ function.

  • 1]

    Upper

  • 2]

    String

  • 3]

    Trim

  • 4]

    Lower

Solution
5
Discuss

Course(course_id,sec_id,semester)

Here the course_id,sec_id and semester are __________ and course is a _________

  • 1]

    Relations, Attribute

  • 2]

    Attributes, Relation

  • 3]

    Tuple, Relation

  • 4]

    Tuple, Attributes

Solution
6
Discuss

Using which language can a user request information from a database?

  • 1]

    Query

  • 2]

    Relational

  • 3]

    Structural

  • 4]

    Compiler

Solution
7
Discuss

’_____’ matches any string of ______ three characters. ’_____%’ matches any string of at ______ three characters.

  • 1]

    Atleast, Exactly

  • 2]

    Exactly, Atleast

  • 3]

    Atleast, All

  • 4]

    All, Exactly

Solution
8
Discuss
SELECT name
FROM instructor
WHERE dept name = ’Physics’
ORDER BY name;

By default, the order by clause lists items in ______ order.

  • 1]

    Descending

  • 2]

    Any

  • 3]

    Same

  • 4]

    Ascending

Solution
9
Discuss

Database __________ which is the logical design of the database, and the database _______ which is a snapshot of the data in the database at a given instant in time.

  • 1]

    Instance, Schema

  • 2]

    Relation, Schema

  • 3]

    Relation, Domain

  • 4]

    Schema, Instance

Solution
10
Discuss

The term _______ is used to refer to a row.

  • 1]

    Attribute

  • 2]

    Tuple

  • 3]

    Field

  • 4]

    Instance

Solution
# Quiz