Exam (elaborations)
M06 Quiz (2)
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- ITSP 132 Quizzes
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- ITSP 132 Quizzes
Exam of 3 pages for the course ITSP 132 Quizzes at ITSP 132 Quizzes (M06 Quiz (2))
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M06 QuizWhich language has commands to specifies access rights to relations and views? -
ANS-Neither
Insert, update, delete and select are commands in: - ANS-DML
The following command creates an entity called employee.
CREATE TABLE employee
(
Emp_id varchar(20),
Emp_firstname varchar(20),
Emp_lastname varchar(20),
Emp_age numeric(2),
Primary key (emp_id)
) - ANS-True
An SQL query is used for: - ANS-Retrieving data from a database
Data manipulation language provides the ability to query information directly from the
datafiles and alter the structure of the datafiles. - ANS-False
Is the following statement correct?
SELECT * FROM HR.EMPLOYEE WHERE LastName = Jones; - ANS-False
Data definition language provides commands for defining relation schemas, deleting
relations, and modify relations. - ANS-True
Null values indicates: - ANS-An absent value that may exist but unknown or doesn't
exist at all
Which language has commands to define views? - ANS-DDL
DDL allows specification for: - ANS-Set of indices to be maintained
Integrity constraints
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