- Creating a chart or graph
When you run a query you must choose:
- which field(s) to base the search on (e.g. Last Name)
- what search criteria to use (e.g. is equal to Smith)
If a query is an "and" search, it will narrow down what the search finds.
If a query is an "or" search, it will expand what the search finds.
It is important for a data to be entered correctly in a database as if it is not there can be many pottential things that can go wrong. For example, if a teacher were to take pupils out on a field trip and some of the emergency contact numbers were incorrect and an emergency did take place, the child's parents would not be informed. A error like this could be pottentially fatal.
Comments
No comments have yet been made