Can I read Understanding Keys in Databases on EtoBox?

Understanding Keys in Databases by onlineclasses190 is a document available to read on EtoBox.

What is Understanding Keys in Databases about?

The document defines primary key, candidate key and super key. It explains that a primary key uniquely identifies each record in a table and cannot contain NULL or duplicate values. A candidate key can contain NULL values but must uniquely identify each record. A super key can identify multiple records but may contain duplicate or NULL values.

Author

onlineclasses190

Language

EN