0
$\begingroup$

We say that a query in a TRC is a statement of the form $\{T: P(T)\}$, where $T$ is a tuple variable and $P(T)$ is a formula.

Now my question is, what are the possible tuples $T$ to be tested i.e., what are the types and values for tested tuples.

As far as I know in set theory and in particular in set builder notation the variables should come from another well-defined set.

$\endgroup$
0
$\begingroup$

From Wikipedia:

A tuple is of the form $T=(D,R,h)$ where $D$ is the domain, $R$ is a set of relation names, and $h$ is a mapping that associates a column name to each relation in $R$. To represent a tuple, we can see $D$ as the set of keys, and $R$ the table associated with those set of keys, and $h$ the column names of the table.

$\endgroup$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.