The attribute association area included in disk space calculations is not a sizing factor for memory. Calculate only the main area of the outline.
For memory size requirements, outline size is calculated using the following factors:
The number of members in the outline
The length, in characters, of member names and aliases
To calculate the outline memory requirement, multiply the number of members by a name-length factor of 300 bytes-400 bytes and write the result in the cell labeled MA in Table 250, Worksheet: Estimating Memory Requirements for a Database.
If the database includes few aliases or very short aliases and short member names, use a smaller number in the 300 byte-400 byte range. If you know that the names or aliases are very long, use a larger number within this range.
Because the name-length factor is an estimated average, the following formula provides only a rough estimate of the main area of the outline:
memory size of outline = number of members * name-length factor
Note: | See Limits, for the maximum sizes for member names and aliases. |
Assuming that the outline has 26,000 members and a median name-length, use the following calculation to estimate the outline size used in memory:
26,000 members * 350 bytes per member = 9,100,000 bytes