12th Class Computer Science Chapter 7 Short Questions with Answers Online Preparation

Question # 1

Ans 1: A subfrom is a form that is placed in parent form called the main form.Sub forms are particularly useful to display data forms tables and quries that have one to many relationship.A sub form combination is sometime refferred to as a hierarchical form a master form or a parent/child form.

Question # 2

Ans 1: A sub from is a form that is placed in apparent form,called the main form. Sub forms are particularly useful to display data from tables and queries that have one-to-many relationship. A hierarchical form, a master/detail form,or a parent /child form.

Question # 3

Ans 1: Radio Button : Option buttons are called radio buttons. Theses are user interface controls typically used to provide quick, intuitive way to select from two or more mutually exclusive data values.
Example: If a column (field) has two potential values, say "yes" and "No" ,or "On" and "off", the option button makes it easy for the user to select one or the other. Option buttons are collected in a "Group" such that selecting one button automatically de-selects the other button (or other buttons) in the same group.

Question # 4

Ans 1: In Microsoft Access, a combo box is an object or control that you place on a form . It displays a list of values that a user can quickly select from. The values displayed within a combo box can be populated by a table/query, value list, or field list. Here is a list of topics that explain how to use combo boxes in Access.

Question # 5

Question # 6

Ans 1: Autoform is a wizard Access that creates the specific types of form from selected table or query.To create an Autoform select the forms tab and click the New button,There are two types of automatic form.The Autoform generates a simple data entry form based on selected table or query.

Question # 7

Ans 1: Presentation of processes data obtained from database is called report. The report can be displayed on the screen,on the paper or on the disk.The Following are the main uses of reports:1) To display information obtained from a database .2) To display result of a query3) To produce output according to the needs of the user.

Question # 8

Ans 1: Unlike importing, liking objects from another database will create a link to an object in another database while not copying the table to the current database. Create a link by following these steps:
1) Open the destination database.
2) Select File| Get External | Link Table....From the Menu Bar
3) Choose the Database that the table is located in and click the Link button.

Question # 9

Ans 1: In columnar form single record is displayed at one time with labels and form field listed side by side in columns.In a columnar form each field appears in a separate line with a label to its left ; only one record is shown on each screen,

Question # 10

Ans 1: In Microsoft Access a combo box is an object or control that you place an form.It display a list of value that a user can quickly select from.The value displayed within a combo box can be populated by a table/query,value list,or field list.Here is a list of topics that explains how to use combo box in Access.