Page 10 - Computing Book 7

Data Handling Class 7

Data Handling

What is a Database?

A database (DB), in the most general sense, is an organized collection of data. In other words, a
database is used by an organization as a method of storing, managing and retrieving information.
Modern databases are managed using a database management system (DBMS).

Use Relative and Absolute References
In MS Excel all the cells have an address, for example, the first cell is known as A1. This address is
taken from rows and columns, A is for the column and 1 is for the row. A cell reference is the
“address” of the cell and identifies its location. When you want to copy the same formula to new
cells, you can use the relative and absolute references.

Relative Reference

Relative Reference is the cell reference. When you copy a cell that has a formula, the formula
changes automatically. The change depends on the relative position of rows and columns.
For example, type the contents of columns A and B below and in cell C2, type =A2*B2. If you copy
the formula A2*B2 to cell C3, it will become A3*B3.

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