There are currently five normal forms for normalization[2](first normal form, second normal form, third normal form and so on). The goal of normalization isto have relational tables free of redundant data and that can be correctly modified with consistency. How many levels of normalization are ...
This article will take a practical look at database normalization, focusing on the first three of seven generally recognized normal forms. Additional resources that look at the theory of database normalization and the additional normal forms can be found in the Resources section at the end of thi...
Queries Logical OR - You can look for records in the state of Indiana or Illinois by saying “IL” OR “IN” You can also say: In (“IL”, “IN”, “OH”) Logical AND - you can make multiple entries in the query boxes. For example, in the State field enter “IL” and then i...
These rules require you to go through your flat table and look for piece of information that repeats from record to record. Usually, this information comes from data that is common between the various items and people listed in the database. You then create separate tables for this information...
These rules require you to go through your flat table and look for piece of information that repeats from record to record. Usually, this information comes from data that is common between the various items and people listed in the database. You then create separate tables for this information...