SQL is the reference language for querying databases. It is used to update the database data. - General diagram of a database. - Principles of tables and relationships between data. - The role of integrity constraints. - Primary and foreign keys. - Creation of a database. - Creation of tables. - Learn the different types of bases (integer, real, string, date). - Modify the structure of a table. - Deleting a table - Data insertion (insert). - The update. - The deletion of information (delete). - The select queries. - Sort data - Grouping and condition - The joints. - The views - Stored procedures. - The triggers. - Constraints.