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Database design is the organization of data according to a database model. The designer determines what data must be stored and how the data elements interrelate. With this information, they can begin to fit the data to the database model. A database management system manages the data accordingly.
Normalization is a database design technique, which is used to design a relational database table up to higher normal form. The process is progressive, and a higher level of database normalization cannot be achieved unless the previous levels have been satisfied.
A database model is a type of data model that determines the logical structure of a database. It fundamentally determines in which manner data can be stored, organized and manipulated. The most popular example of a database model is the relational model , which uses a table-based format.
The process of designing a database involves producing the previously described three types of schemas - conceptual, logical, and physical. The database design documented in these schemas is converted through a Data Definition Language , which can then be used to generate a database.
Database design – Designing how data is held in a database; Data structure diagram – visual representation of a certain kind of data model that contains entities, their relationships, and the constraints that are placed on them; Enhanced entity–relationship model – Data model
Database theory. Database theory encapsulates a broad range of topics related to the study and research of the theoretical realm of databases and database management systems . Theoretical aspects of data management include, among other areas, the foundations of query languages, computational complexity and expressive power of queries, finite ...