Calculating the Factors to Be Used in Sizing Disk Requirements

Before estimating disk space requirements for a database, you must calculate the factors to be used in calculating the estimate. Later in the chapter, you use these values to calculate the components of a database. For each database, you add together the sizes of its components.

Table 244 lists the sections that provide instructions to calculate these factors. Go to the section indicated, perform the calculation, and then write the calculated value in the Value column.

Table 244. Worksheet: List of Factors That Affect Disk Space Requirements of a Database

Database Sizing Factor

Label

Value

Potential Number of Data Blocks

DA

This image of a space is used for formatting purposes only.

Number of Existing Data Blocks

DB

 

Size of Expanded Data Block

DC

 

Size of Compressed Data Block

DD