keys {autodb} | R Documentation |
Relational data keys
Description
Generic function, with the only given method fetching candidate key lists for relation schemas.
Usage
keys(x, ...)
keys(x, ...) <- value
Arguments
x |
a relational schema object, such as a |
... |
further arguments passed on to methods. |
value |
A list of lists of character vectors, of the same length as
|
Value
A list containing lists of unique character vectors, representing
candidate keys for each element of x
.
[Package autodb version 2.3.1 Index]