cat

{name:str, attr:str, type:str}

A relation describing relvars in the current schema. Short for catalog.

Examples

Filter for a given relvar name

cat[name="$P"]

name
attr
type

$P
CITY
str
$P
COLOR
str
$P
PNAME
str
$P
PNO
str
$P
WEIGHT
int

Full example schema

cat

name
attr
type

$P
CITY
str
$P
COLOR
str
$P
PNAME
str
$P
PNO
str
$P
WEIGHT
int
$S
CITY
str
$S
SNAME
str
$S
SNO
str
$S
STATUS
int
$SP
PNO
str
$SP
QTY
int
$SP
SNO
str
$constraint
name
str
$constraint
rule
str
error
message
str
error
name
str