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DBMS SQl Datatype

DBMS SQl Datatype with DBMS Overview, DBMS vs Files System, DBMS Architecture, Three schema Architecture, DBMS Language, DBMS Keys, DBMS Generalization, DBMS Specialization, Relational Model concept, SQL Introduction, Advantage of SQL, DBMS Normalization, Functional Dependency, DBMS Schedule, Concurrency Control etc.

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SQL Datatype

  • SQL Datatype is used to define the values that a column can contain.
  • Every column is required to have a name and data type in the database table.

Datatype of SQL:


DBMS SQL Datatype

1. Binary Datatypes

There are Three types of binary Datatypes which are given below:

Data Type Description
binary It has a maximum length of 8000 bytes. It contains fixed-length binary data.
varbinary It has a maximum length of 8000 bytes. It contains variable-length binary data.
image It has a maximum length of 2,147,483,647 bytes. It contains variable-length binary data.

2. Approximate Numeric Datatype :

The subtypes are given below:

Data type From To Description
float -1.79E + 308 1.79E + 308 It is used to specify a floating-point value e.g. 6.2, 2.9 etc.
real -3.40e + 38 3.40E + 38 It specifies a single precision floating point number

3. Exact Numeric Datatype

The subtypes are given below:

Data type Description
int It is used to specify an integer value.
smallint It is used to specify small integer value.
bit It has the number of bits to store.
decimal It specifies a numeric value that can have a decimal number.
numeric It is used to specify a numeric value.

4. Character String Datatype

The subtypes are given below:

Data type Description
char It has a maximum length of 8000 characters. It contains Fixed-length non-unicode characters.
varchar It has a maximum length of 8000 characters. It contains variable-length non-unicode characters.
text It has a maximum length of 2,147,483,647 characters. It contains variable-length non-unicode characters.

5. Date and time Datatypes

The subtypes are given below:

Datatype Description
date It is used to store the year, month, and days value.
time It is used to store the hour, minute, and second values.
timestamp It stores the year, month, day, hour, minute, and the second value.

Next TopicDBMS SQL Command




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