One of the most important steps in desiging a database is establishing the data model. Part one of a two-part article describes how to create a logical model.

The logical database model should still reflect the actual one-to-many relationship. One might even go so far as to document the design choice within the notes inside one’s data modeling tool.

When building up a logical design, primary keys should be identified by the actual data points in play. Generated or surrogate keys should be held in abeyance until dealing with the physical design ...

Teradata Corp. has introduced the Utilities Logical Data Model (uLDM). As a utility's business needs evolve, the Teradata uLDM helps customer adapt their data warehouse physical model to ensure the ...

Teradata, a division of NCR Corporation, has announced the launch of the Teradata Communications Logical Data Model (LDM) Version 5.0. NCR is represented in South Africa by National Data Systems ...