Within the first two years, Brian made himself the leader of the group and was, uniquely, writer/producer/arranger/musician and lead vocalist of the band. It was clear from the very early years that Brian was the one destined to take The Beach Boys into the spotlight.
A logical design is a conceptual, abstract design. You do not deal with the physical implementation details yet; you deal only with defining the types of information that you need. The process of logical design involves arranging data into a series of logical relationships called entities and attributes. An entity represents a chunk of information. In relational databases, an entity often maps to a table. An attribute is a component of an entity and helps define the uniqueness of the entity.
Logical reasons to create logical databases in SAP. SAP comes with a set of tools that allows IT managers to manipulate database information. Because business needs are unique, however, there are many instances where new databases must be formed. Fortunately, SAP's ABAP/4 language provides a solution.