Class 12 Computer Science Chapter 7 Notes
Important Notes of complete Class 12 Computer Science Chapter 7 Notes written by Professor Mr. Faraz Qasir Suib. These notes are very helpful in the preparation of Class 12 Computer Science Chapter 7 Notes of for the students of the intermediate and these are according to the paper patterns of all Punjab boards.
Summary and Contents:
Topics which are discussed in the notes are given below:
- Describe Form in MS Access ?
Answer :
Microsoft Access Form
Access Form creates the user interface to your table. Although you can use Datasheet
to perform many of the same functions as forms, Forms are used as an alternative way
to enter data into a database table. It provides a different way of viewing table data.
Access enables us to create forms that can be used to enter, view, and print data.
The Form is constructed from a collection of individual design elements called
controls or control objects. Controls are the components we see in the windows dialog
boxes of the access and other windows applications like buttons, check boxes. We use
text boxes to enter and edit data, labels to hold field names and object frame to display
graphics. A Form Wizard is provided to assist in the construction of forms.
- Describe Types of Form in MS Access ?
Answer :
Microsoft Access Form - Types
Four types of forms can be created. These include single-column (displaying one
record at a time in a vertical format), tabular (displaying multiple records in a rowand-column format), main / sub form (combining the single-form and tabular formats
into one form), and graph
- Describe Sub Form in MS Access ?
Answer :
Microsoft Access – Sub Form
A sub-form is a form that is placed in a parent form, called the main form. Sub forms
are particularly useful to display data from tables and queries that have one-to-many
relationships.
- Describe Reports in MS Access ?
Answer :
Microsoft Access – Reports
Presentation of processed data obtained from a database is called report. The report
can be displayed on the screen, printed on the paper or saved on the disk for later
retrieval. The main uses of reports :
To display information obtained from a database.
To display result of a query.
To produce output according to the needs of the user.
- Describe Object Linking in MS Access ?
Answer :
Microsoft Access – Object Linking
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Linking objects from another database will create a link to an object in another
database while not copying the table to the current database. The latest object data will
be retrieved every time we access the link.