Queries are the database equivalent of filters in a spreadsheet. Just as a filter can limit and reorganize the information displayed in a spreadsheet, so a query limits and reorganizes the information ...

Designing an appropriate set of indexes can be one of the more troubling aspects of developing efficient relational database applications. Perhaps, the most important thing you can do to assure ...

I recently published a tutorial describing the different available methods to store data locally in an Android app. However, due to article length constraints, I could not adequately cover creating ...