Data Structure (Data Definition)

About

A data structure defines the structure of a data resource.

This definition may be created:

• via a data definition file
• via a command (Example: for a database, a SQL statement known as the Data Definition Language (DDL))
• via the structure of another data resource

Operation

Creation

The creation of a data structure in Tabulify is done via:

• the create operation
• DDL statements
• or during any transfer if the target does not exist

View

The data structure is viewable via the describe operation

Logical Structure

There is roughly three logical structures in the world that are:

• a tabular
• a graph
• a hierarchy (ie a graph without cycle)