The logical model is built on sets of data. For a more in-depth explanation of the ER model, visit the ITS Database Services Web site or the Mapping an ER Model to the Relational Model Web site (a ...

A data model is a visual representation of data elements and the relations between them. Written by eWEEK content and product recommendations are editorially independent. We may make money when ...

Logical models are based on functional dependencies between the data elements, and not number of reads. Once the discussion considers speed of response, or the number of reads, or the count of records ...

Cost reduction: Data modeling may seem like an extra step in the process, but it is a cost-effective one. The process can prevent potential oversights and glitches that often cost companies dearly.

A core activity in information systems development involves building a conceptual model of the domain that an information system is intended to support. Such models are created using a ...

Under usual circumstances, the one-to-many or many-to-many relationship, alone, drives the pattern used within the database model. Certainly, the logical database model should represent the proper ...