# Tabulky dat a vztahy mezi nimi

Všechny tabulky mají svá systémová pole popsaná v této kapitole;

U barevně vyplněných polí (EcENTITY & EcASSOC) je očekáváno, že budou rozšířeny o další (vlastní) tabulku;

tato pole mohou být vytvořena pomocí např. MS SQL Management Studio

![](/files/dsNLMBs11sYMA5DuOApQ)


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