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SQL Data Types

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SQL data types define the kind of values that can be stored in a database column. They are part of the SQL standard and ensure that data is stored, processed, and retrieved in a consistent way.

SQL data types are broadly categorized into:

  • Numeric Types – for storing numbers (integers, decimals, etc.).

  • Character Types – for storing text strings.

  • Date & Time Types – for storing dates, times, and timestamps.

  • Large Object Types – for storing large binary or text data like images, documents, or media files.

Understanding data types is fundamental to designing effective database schemas and ensuring data integrity.

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