What are the advantages of relational data model?
Advantages
• Ease of use - The revision of any information as tables consisting of rows and columns is quite natural and thus even first time users search it attractive.
• Flexibility - Various tables from that information has to be linked and extracted can be simply manipulated through operators such as project and join to provide information in the form in that it is desired.
• Security - Security control and authorization could also be implemented more easily through moving sensitive attributes within a given table into a separate relation along with its own authorization controls. If authorization needs permits, a particular attribute could be joined back along with others to enable full information retrieval.
• Data Independence - Data independence is achieved more simply along with normalization structure used in a relational database than in the more complex tree or network structure. It also frees the users from details of storage structure and access techniques.
• Data Manipulation Language - The possibility of responding to ad-hoc query through means of a language based on relational algebra and relational calculus is simple in the relational database approach. Gives simplicity in the data organization and the availability of reasonably easy to extremely powerful query languages.