Needs an identifier in common between tables – shared column - to.Split into separate tables with one table per class of information.Every row-column combination contains a single atomic value, i.e., notĬontaining parts we might want to work with separately.The only things that will differ are the details ofĮxactly how to import and export data and the details of data types. Will apply to the other database systems as well (e.g., MySQL, PostgreSQL, MSĪccess, Filemaker Pro). We’re going to use SQLite today, but basically everything we teach you There are a number of different database management systems for working with relationalĭata. The queries are distinct from the data, so if we change the data we can just.Queries let us look up data or make calculations based on columns.
Relational databases store data in tables with fields (columns) and records.
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