10 Questions
What is the primary purpose of the NUMBER data type in Oracle database?
To store numeric values.
What is the main difference between the BLOB and CLOB data types?
BLOB is used for binary data, while CLOB is used for character data.
Which data type is used to store very large amounts of unstructured data in Oracle database?
BFILE.
What is the purpose of the DATE data type in Oracle database?
To store dates and times.
What is the main purpose of the VARCHAR2 data type in Oracle database?
To store variable-length character strings.
What are the three character data types in Oracle database that support Unicode characters?
NCHAR, NVARCHAR2
Which two data types are used to store large amounts of binary data in Oracle database?
BLOB, BFILE
What is the main difference between the CHAR and VARCHAR2 data types in Oracle database?
CHAR is a fixed-length character data type, while VARCHAR2 is a variable-length character data type
Which data type is used to store date and time values in Oracle database?
DATE, TIMESTAMP
What is the purpose of the LONG and RAW data types in Oracle database?
LONG is used to store large amounts of character data, while RAW is used to store binary data
Study Notes
Classification of Built-in Data SQLTypes in Oracle Database
- Oracle database has five categories of built-in data types
Character Data Types
- Include: CHAR, VARCHAR2, NCHAR, NVARCHAR2
- Used to store character data
Number Data Types
- Include: NUMBER, FLOAT
- Used to store numerical data
Datetime and Interval Data Types
- Include: DATE, TIMESTAMP
- Used to store date and time data
Large Object (LOB) Data Types
- Include: BLOB, CLOB, NCLOB, BFILE
- Used to store large objects such as images, videos, and audio files
LONG and RAW Data Types
- Include: LONG, RAW
- Used to store long strings of raw, unformatted data
Test your knowledge of Oracle's built-in data types, including character, number, datetime, and large object data types. Learn to identify and distinguish between CHAR, VARCHAR2, NUMBER, FLOAT, DATE, TIMESTAMP, BLOB, CLOB, NCLOB, BFILE, LONG, and RAW data types.
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