'Partial key' presentation slideshows

Database

Database. Normalization. Designing Good Schemas. We know how to create schemas, but ... how do we create good schemas? what does good mean? Schema quality measurements: semantics of the attributes minimal redundancy minimal frequency of null values. Functional Dependences.

567 views • 30 slides

Normalization

449 views • 27 slides

Normalization

335 views • 27 slides

Welcome!

268 views • 14 slides

Conversion from ER diagram to relational model

Conversion from ER diagram to relational model. ER is a visual model The relational model is a matemathical model. Database development as part of systems development. Analysis phase Draw an ER-diagram Design phase Convert ER-diagram to relational model.

1.96k views • 10 slides