2.3.7 relational databases (Relational Database) is a database concept, where the most popular today, there will be. The storage of the table that is associated with each table consisting of rows and columns, where storage format that is most well known for the concept of a relational database, it is something that must be recognized. As follows: 2.3.7.1 Entity (the entity that reads) 2.3.7.2 Attribute (read that attributes) 2.3.7.3 Relation (pronounced RI-mansion or a relationship) to look up things as we are taken are stored in the database, it will assume that it is something tangible (which uses the term "Attribute instead) and are able to have a relationship with things (which uses the term Relation represent the relationship between the Entity)
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