Data redundancy is a data organization issue that allows the unnecessary duplication of data within your Microsoft Access database. A change or modification, to redundant data, requires that you make...
1. Wasted Storage Space. 2. More difficult Database Updates. 3. A Possibility of Inconsistent data. Note: A solution to the problem is to place the redundant data in a separate table, one in which...
The hierarchical model divides the data into parents and children with the system working on the principle that each child can have only one parent but each parent can have an infinate number of...