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Table B-1
Summary of Description File Elements continued
Element
Keyword and Format
Range
Comments
Data Compression*
compress=<y|n>
N/A
Not applicable to keyonly files.
Key Count
key=nnn
0–119
Specify 0 to create a
data-only file.
Page Size
page=nnnn
512– 4,096 Must be a multiple of
512.
Page Preallocation*
allocation=nnnnn
1– 65,535
None.
Replace Existing
File*#
replace=<y|n>
N/A
None.
Include Data*
data=<y|n>
N/A
Specify n to create a
key-only file. Cannot
create a key-only file that
both allows duplicates
and uses a systemdefined key.
Free Space
Threshold*
fthreshold=<5|10|20|30>
N/A
Applicable only for files
that have variable-length
records. The default is 5.
Variable-Tail
Allocation Tables
(VATs)
huge=<y|n> #
vats=<y|n>
N/A
Applicable only for files
that have variable-length
records.
Balanced Index*
balance=<y|n>
N/A
None.
Use Key Number *
usekeynum=<y|n>
N/A
Used with the Key
Number element.
Pervasive.SQL User’s Guide
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Description Files