DDLP(1) TYPHOON DDLP(1)
1995/06/12
NAME
ddlp - Data Definition Language Processor
SYNOPSIS
ddlp [-a[1|2|4]] [-f] [-h<file>] file
DESCRIPTION
ddlp processes a ddl-file and generates a dbd-file and a header file
with structures and ids for records, fields and keys.
The -a option sets the structure alignment which must match the one
used by the C compiler. Specifying the -f options causes ddlp to only
generate constants for those fields that are keys. The -h option
overrides the default header file name by the one specified by the
user.
DATA DEFINITION LANGUAGE GRAMMER
database
-> "database" name "{" decl {decl} "}"
decl -> "data" "file" "[" pagesize "]" name "contains"
name ";"
| "key" "file" "[" pagesize "]" name "contains"
name "." name ";"
| "define" name expr
| "sequence" name int [sortorder] "by" int ';'
| "record" name "{" field {field} [key_decls] "}"
key_decls
-> primary_key {alternate_key} {foreign_key}
primary_key
-> "primary" "key" name key_def ";"
alternate_key
-> "alternate" ["optional"] ["unique"] "key" name
key_def ";"
foreign_key
-> "foreign" ["optional"] foreign_keydef name
"references" name ";"
foreign_keydef
-> name | name "{" name { "," name } "}"
key_def
-> "{" key_field { "," key_field } "}"
"on" "update" action
"on" "delete" action ";"
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DDLP(1) TYPHOON DDLP(1)
1995/06/12
key_field
-> name [sortorder]
sortorder
-> "asc" | "desc"
action
-> "restrict" | "cascade"
pagesize
-> "[" int "]"
field
-> type name [dimension] ";"
dimension
-> array {array} [ "variable" "by" name ]
array
-> "[" integer "]"
type -> int_type
| "signed" int_type
| "unsigned" int_type
| float_type
| struct_type
int_type
-> "char"
| "int"
| "long"
float_type
-> "float"
| "double"
struct_type
-> struct_head [name] "{" field {field} "}" name
[dimension]
struct_head
-> "struct"
| "union"
expr -> expr "+" expr
| expr "-" expr
| expr "/" expr
| expr "*" expr
| "(" expr ")"
| integer
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DDLP(1) TYPHOON DDLP(1)
1995/06/12
IDENTIFICATION
Author: Thomas B. Pedersen.
Copyright (c) 1994 Thomas B. Pedersen.
SEE ALSO
- 3 - Formatted: June 9, 2026
