COMPUTER NOTES FOR CLASS 8 Chapter 3 HTML Exercise E 1. What is hyperlink? Ans: A hyperlink is an underlined text or an image which when clicked upon with a mouse will take you to some other location, may be in the same web document or to another web document. 2. Differentiate between link, alink and vlink attributes. Ans: Link: The link color is the color of a link that appears before it has been clicked. Alink: The alink (active link) color appears while the mouse is clicking the link. Vlink: The vlink (visited link) is the color of the link after the user has already visited it. 3. Why is <ANCHOR> tag used? Ans: <ANCHOR> tag is used for hyper linking. 4. How many types of links can be created in a webpage? Ans: Two types of links can be created in a web page. These are Internal Links and External Links. 5. Write a short note on <TABLE> tag. Ans: In HTML, tables are prepared using <TABLE> tag. The <TABLE> tag is a container tag. This tag creates a series of cells which are filled up using <TD> tag. <TR> tag shows which cell in the row is to be filled with the data. <CAPTION> tag is used for defining the title of the table. <TH> tag is used for defining table headings. 6. Differentiate between Rowspan and Colspan. Explain with examples. Ans: The Rowspan attribute applies when a single cell is extended to more than a single row. This means that a single cell extends for two or more rows instead of one row. While, the Colspan attribute applies when a single cell is extended to more than a single column. This means that a single cell extends for two or more columns instead of one column. 7. What are frames? Give an example to show how are they created on a web page? Ans: HTML frames are used to divide your browser window into multiple sections where each section can load a separate HTML document. Many frames of a browser window constitute a Frameset. The <FRAMESET> tag defines how to divide the window into frames. The <FRAMESET> tag divides the window into vertical frames using Cols attribute. The <FRAMESET> tag divides the window into horizontal frames using Rows attribute. Chapter 4 MS ACCESS 2010 Exercise F 1. What is a Database Management System? Ans: Database Management System is an application program that is used to enter, organize and manipulate data in a database. It acts as a communication link between the user and the database. 2. What are the advantages and disadvantages of DBMS? Ans: Advantages of using DBMS are - a) DBMS reduces the problem of keeping duplicate records. b) There are fewer chances of errors. c) Records are more complete and consistent. d) Data can be shared. e) Unauthorized use can be controlled. Disadvantages of using DBMS are - a) It is complex to understand. b) Some applications of DBMS are very slow. c) It is expensive and occupies a large storage space in the hard disk. 3. Name the different types of database objects. Explain any two in detail. Ans: The different types of database objects are Table, Query, Form and Query. Table: A table is the basic building block of a database. It contains data in the form of rows and columns and looks similar to a spreadsheet. Forms: Form is an interface used for viewing, adding, deleting and modifying data. 4. Write the steps to start MS Access 2010. Ans: The Steps to start MS Access 2010 are- i) Click on Start. ii) Click on All Programs. iii) Click on Microsoft Office. iv) Click on Microsoft Access 2010. 5. What are the different data types offered by MS Access? Ans: The different data types offered by MS Access are Text, Memo, Number, Date/Time, Currency, AutoNumber, Yes/No, OLE Object, Hyperlink, Attachment and Lookup Wizard. 6. What is the file extension of an MS Access database? Ans: The file extension of an MS Access database is .accdb 7. Write the steps to set Field Properties in a Design View of a table. Ans: To set Field Properties in a Design View of a table, we would have to click on the name of the field then select Data Type. In General tab, click on the Format option textbox then click on the arrow and select the choice of data type from the drop-down list. 8. Write the steps to save a table. Ans: The steps to save a table are - a) Click on File tab. b) Click on Save. c) In the Save As dialog box, enter a name for the table. d) Click on OK. CHAPTER 5 MS ACCESS QUERIES, FORMS AND REPORTS Exercise D 1. What is a form? Write the steps to create Form. Ans: A form in Access is a database object that you can use to create a user interface for a database application. The steps to create a Form are - a) Click on Create tab. b) Click on New Form. c) Click and drag individual fields to different positions. d) The Form designed as above can be used to enter data directly into the table. 2. What are queries? Ans: Queries are the process to find answers to questions related to one or more tables. A query can give you an answer to a simple question, perform calculations, combine data from different tables, add, change, or delete data from a database. 3. Name different types of queries. Explain any three in detail. Ans: The different types of queries are Select, Advanced Filter / Sort, Totals / Summary, Parameter, Auto Lookup, Action and Cross Tab. Select Query: Select Query selects the data from one or more tables and displays the data in the order in which the user wants to display it. Sort Query: Sort Query allows the user to find and sort information from a single table. Parameter Query: Parameter Query asks some information from the user before displaying the table datasheet. 4. What is a foreign key? Ans: The Foreign Key field refers to a field in a table that stores value which matches the Primary Key field in another table. 5. Write the steps to set relationship between two tables. Ans: To set relationship between two tables, we would have to follow the following steps- a) Open one of the tables in Datasheet View. b) Click on Database Tools tab. c) Click on Relationships. d) In the Show Table dialog box, double click on both the tables to put them in Relationships window. e) Click on Close. f) Drag and drop common field on one table on top of the other table. g) In the Edit Relationships dialog box, click on Create. 6. Write the steps to create a Select Query. Ans: To create Select Query, we would have to follow the following steps- a) Click on Create tab. b) Click on Query Design. c) In the Show Table dialog box, click on the table name. d) Click Add. e) Click Close. f) Double click on the field names to be added. g) Click on Design tab and Run to execute the query. 7. Write the steps to create a Report. Ans: To create a Report, we would have to follow the following steps- a) Click on Create tab. b) Click on Report. c) Click and drag individual fields to different positions. d) The Total column for numeric fields is automatically created in the Report. c) Click on General tab. d) Click on the Format option textbox. e) Click on the arrow and select the choice of data type from the drop-down list.