- Numeric Types: Numeric datatypes store numbers. Common types include:
NUMBER: A flexible datatype for numeric values of any size.
FLOAT: Used for floating-point numbers.
INTEGER: Represents whole numbers.
- Character Types: Character datatypes store text data. Common types include:
CHAR: Fixed-length character strings.
VARCHAR2: Variable-length character strings, more storage-efficient.
NCHAR: Fixed-length character strings in national character set.
NVARCHAR2: Variable-length strings in national character set.
- Date/Time Types: Used for storing date and time values. Common types include:
DATE: Stores date and time values.
TIMESTAMP: Stores date and time with fractional seconds.
- LOB Types: Large Object types are used to store large amounts of data, such as:
BLOB: Binary Large Object for binary data.
CLOB: Character Large Object for large text data.
NCLOB: National Character Large Object for large text data in national character set.
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