APPLICATION AND SYSTEMS-DEVELOPMENT SECURITY

  1. Polyinstantiation allows different records to exist in the same table at various security levels.

  2. Database models can be relational, using attributes (columns) and tuples (rows); hierarchical, combining records and fields in a logical tree structure; or distributed, storing information in more than one database.

  3. The system life cycle includes the following stages: project initiation, functional design and planning, system design, functional review, software development, product installation, operation and maintenance, and disposal and replacement.

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