One of the trickiest aspects of relational database management can be dealing with missing information. The standard method of representing missing information is to set the “value” to null. A null ...
When databases are designed, they serve as semantic expressions of the organizations that employ them. Those expressions describe the data items of importance and articulate the business rules as the ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback