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Chapter 01 - Key points

2. Structured Data

2.1. Presentation

  • Data has a well-defined structure.
  • In the case of databases:
    • Data is organized into tables.
    • Each table has several columns.
    • The table contains records; these records all have the same structure (same number, types, and column order).
  • The DBMS checks the data for conformity before inserting it.