A Tiny Intro to Database Systems

Here is a short summary of DBMS : database management systems.

Part of the motivation behind those little chapters is described in another blog post here.

If you would like to read those in a nicely formatted PDF or if you have any questions / suggestions / requests, feel free to send me a tweet @dandancrisan.

 
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Now read this

Intro to Database Systems - Part 11 to 13 : Integrity Constraints

Constraints are there to impose restrictions on what data is allowed in the database. The basic E/R model introduces us to 2 types of constraints: KEYS Multiplicities The relational model allows us to be more flexible. It imposes bounds... Continue →