Definitions and Records
Data Definition Language (DDL) Reference Manual — 426798-002
5- 15
File-Creation Syntax
{ KEY-SEQUENCED | RELATIVE | ENTRY-SEQUENCED | UNSTRUCTURED }
specifies an Enscribe file type. The first three specify structured files that can have
keys. For a description of file types, see the Enscribe Programmer’s Guide. If the
file type is omitted, DDL assigns a default file type, as explained under
File
Creation Guidelines
on page 5-22.
AUDIT
causes DDL to specify AUDIT when creating FUP source. AUDIT designates the
file as audited by the TMF.
AUDITCOMPRESS
specifies that the audit trail for a file be compressed. The audit trail consists of
before-images and after-images of the database.
BLOCK { block-length | constant-name }
specifies the block size, in bytes, for both data and index blocks in a structured file.
The default block size for DDL is 4,096 bytes.
block-length
is an integer whose value is 512, 1,024, 2,048, or 4,096.
constant-name
is the name of a constant in the open DDL dictionary. The constant value must
be a valid block-length value.
[ NO ] BUFFERED
sets the mode of handling write requests. If you specify BUFFERED, then write
requests to your file are buffered in the disk-process cache. If you specify NO
BUFFERED, writes to your file go through to the disk at each request.
The default value is BUFFERED for audited files, NO BUFFERED for other files.
BUFFERSIZE {
buffer-size | constant-name }
specifies the buffer size, in bytes, for an unstructured file. The default value for
BUFFERSIZE is 4,096 bytes.
buffer-size
is an integer whose value is 512, 1,024, 2,048, or 4,096.
constant-name
is the name of a constant in the open DDL dictionary. The constant value must
be a valid buffer-size value.
Содержание DDL D40
Страница 36: ...Introduction to DDL Data Definition Language DDL Reference Manual 426798 002 1 14 Examining a Dictionary ...
Страница 66: ...Named Constants Data Definition Language DDL Reference Manual 426798 002 4 10 Standard SPI Constants ...
Страница 230: ...Dictionary Manipulation Statements Data Definition Language DDL Reference Manual 426798 002 8 14 SHOW USE OF Statement ...
Страница 370: ...Dictionary Maintenance Data Definition Language DDL Reference Manual 426798 002 10 24 Converting a Dictionary ...
Страница 456: ...Sample Schemas Data Definition Language DDL Reference Manual 426798 002 B 12 ASSNDDL Statements ...
Страница 470: ...DDL Data Translation Data Definition Language DDL Reference Manual 426798 002 C 14 ...
Страница 528: ...Dictionary Reports Data Definition Language DDL Reference Manual 426798 002 E 8 Requesting Reports ...
Страница 552: ...DDL Alignment Rules Data Definition Language DDL Reference Manual 426798 002 H 4 FIELDALIGN_SHARED8 Alignment Rules ...
Страница 576: ...Index Data Definition Language DDL Reference Manual 426798 002 Index 22 Special Characters ...