M-cube repository using
This form allows to edit custom relations based on hierarchical attributes.
Objects is the key part of the repository. It allows
create, edit and delete objects of particular types and establish
relationships between them.
Notes:
- When creating a new object, fill the attributes section first
and press Apply button then you can add relationships
to a newly created object. If you try to bind a new object using
some relationship with other object
before pressing Apply an error occurs because a new object
does not exist still.
- When deleting an object, remove all relationships before.
Using Query tool you can execute M-cube query language queries
on the M-cube repository database. For the query language
syntactic and semantic specifications I refer the user to the Master
Thesis text. You can also use the M-cube query languages
grammar specification document on-line.
There are also several example queries provided with the repository
testing database.
Query tool usage:
- Press the Execute button to directly execute a query.
- Press the Show SQL button to view a SQL statement which is passed
to an underlying database engine.
- Press the Parse button to view parsed query dump.
This function provides textual representation of a pre-evaluated
query.
- Check ShowRebuild check box if you want to see which
relations and relationships are used by a given query and
which relations and relationships caches are re-generated
during a query execution. This check box is used with the Execute
command only.