Form defines width of each field - Database
Programming Language (MCQ) questions
Q. What does a form define?
- Published on 27 Aug 15
Where data is placed on screen
The width of each field
Both A and B
None of the above
ANSWER: The width of each field
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-Posted on 30 Oct 15
- In the context of database, a form is a window or screen which contains numerous fields, or spaces to enter data.
- For any user who views the form gets an idea of its contents as each field holds a field label.
- Using a form is more easy than generating queries to create tables and insert data into fields.
- Databases like SQL and Oracle do not use built-in forms, employing the query option for data creation and manipulation instead.
- For handling these databases it is essential to have querying knowledge.
- For easy form access and manipulation the fields and field labels are organized in a logical manner.
- While making an entry into fields of a form, it is important to be careful about the field types, which are generally set when the form is created.
- An attempt to enter values that do not satisfy the field constraints will fail.
- For instance, a field with a field type "not null" does not take null values and cannot be left blank.
- Some fields may also have table relationships connected by using a foreign key; any alteration done to such a field in a form will need special care.
- Some online databases also have built-in form templates included in them.
- These databases can easily be used by users who are not even aware of scripting, as all entries and changes can be made in the form by a single click.
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