Which one of the following commands is used to modify a column inside a table?
Alter
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Update
Drop
Set
Category: Databases MCQs
Which one of the following keyword is used to find out the number of values in a column?
Which one of the following keyword is used to find out the number of values in a column?
COUNT
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TOTAL
SUM
ADD
A computer security protocol for logging-in can be considered as the example of the ______ component of an information system.
A computer security protocol for logging-in can be considered as the example of the ______ component of an information system.
Procedure
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Software
Data
Hardware
Which of the following keys is generally used to represents the relationships between the tables?
Which of the following keys is generally used to represents the relationships between the tables?
Foreign key
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Primary key
Secondary key
None of the options are correct
Which of the following levels is considered as the level closed to the end-users?
Which of the following levels is considered as the level closed to the end-users?
External Level
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Conceptual Level
Internal Level
Physical Level
The Database Management Query language is generally designed for the _____
The Database Management Query language is generally designed for the _____
All options are correct
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Support end-users who use English like commands
Specifying the structure of the database
Support in the development of the complex applications software
In the relation model, the relation are generally termed as ________
In the relation model, the relation are generally termed as ________
Tables
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Rows
Attributes
Tuples
The architecture of a database can be viewed as the ________
The architecture of a database can be viewed as the ________
Three-level
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Two-level
One level
Four level
The term “ODBC” stands for_____
The term “ODBC” stands for_____
Open database connectivity
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Object database connectivity
Oracle database connectivity
Oral database connectivity
For what purpose the DML is provided?
For what purpose the DML is provided?
Manipulation & processing of the database
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Addition of new structure in the database
Definition of the physical structure of the database system
All options are correct