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This article mainly introduces what problems have been solved by the standardization theory of relational database, which has a certain reference value. Interested friends can refer to it. I hope you will gain a lot after reading this article. Let the editor take you to know it.

The main problem solved by the standardization theory of relational database is how to construct the appropriate logical structure of the database; that is, the basic entity-relationship diagram designed in the conceptual structure design stage is transformed into a logical structure consistent with the data model supported by the selected database management system product.

The main problem solved by the standardization theory of relational database is how to construct the appropriate logical structure of the database.

The logical structure is independent of any data model, and in practical applications, the database environment commonly used has been given (such as SQL Server or Oracle or MySql). Because the databases currently used are basically relational databases, it is necessary to transform the entity-relational diagram into a relational model at first, and then transform it into a specified data model supported by the database management system according to the characteristics and limitations of the specific database management system, and finally optimize it.

Design steps of logical structure of Database

(1) transform the conceptual structure into a general relational, mesh and hierarchical model.

(2) transform the transformed relational, mesh and hierarchical model to the data model supported by the specified database management system.

(3) optimize the data model.

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