Method Two

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Method Two

Use the relative sizes of major tables. The relationship is based on analysis of several large production Host Encyclopedias.

Table	Index 1	Index 2	Index 3
DOBJ	30%	40%	40%
DASC	50%	50%	Not applicable
DPRP	16%	Not applicable	Not applicable
DSUBEX	40%	40%	Not applicable
DTXT	15%	Not applicable	Not applicable
DHLOG	10%	Not applicable	Not applicable
DHOBJ	10%	Not applicable	Not applicable
MODEL	40%	40%	Not applicable
PIDATA	40%	40%	50%
PINAME	25%	20%	Not applicable
PITEXT	25%	20%	Not applicable

Using the information in this table, estimate the number of objects and divide by 70 to get the size of the DOBJ table (in 4 KB pages).

Calculate the sizes of the DASC, DPRP, and DSUBEX tables:
DASC = 1.7 X (DOBJ value)
DPRP = 1.7 X (DOBJ value)
DSUBEX = 1.0 X (DOBJ value)

The factor for DSUBEX is a minimum. If subsetting is not used, or is low, 1.0 is adequate; otherwise, this value needs to be larger.

Example

50 Models x 30,000 Objects/Model = approximately
1,500,000 Objects
1,500,000 divided by 70 = approximately 22,000 4K
DOBJ pages
DASC = 1.7 * 22,000 = approximately 36,000
DPRP = 1.7 * 22,000 = approximately 36,000
SUBEX = 1.5 * 22,000 = approximately 33,000
DOBJ = 22,000 (see above)

	Table	Index 1	Index 2	Index 3
DOBJ	22,000	7,000	9,000	9,000
DASC	36,000	18,000	18,000	N/A
DPRP	36,000	6,000	N/A	N/A
DSUBEX	22,000	13,000	13,000	N/A