Database schema|data model schema|data schema and instance
A database schema is the structure or layout of a database, described in a formal language supported by the database management system (DBMS). The schema describes the tables, fields, relationships, and other elements of a database. A schema is usually designed to represent the relationships between different entities in the system, and it allows users to understand how the database is organized.
A data model is a way of representing the logical structure of a database, including the relationships between different data entities and the rules governing the data. A data model is used to design a database, and it can be represented using a diagram or other visual notation. A data model is an abstract representation of the data structures that are needed to support the business processes of an organization.
In a database management system (DBMS), the data model is implemented as a schema, which is a set of rules that govern the organization and storage of data in the database. The schema defines the structure of the database, including the data types, attributes, and relationships between data entities. The schema is used by the DBMS to interpret and manipulate the data stored in the database.
There are several different types of data models that can be used in a DBMS, including the relational model, the object-oriented model, and the hierarchical model. Each of these models has its own set of rules and conventions for organizing and storing data, and they are suited to different types of applications and data structures.
Database schema|data model schema and instance|DBMS schema|data schema| different types of schema
______________________________________
Please share this post and blog link with your friends.For more programs use this blog.
If you have any problem, please comment in comment box, subscribe this blog for notifications of new post on your email and follow this blog.If you have any method of this program or want to give any suggestion send email on hc78326@gmail.com
Created by-- HARSH CHAUHAN
