Data Dictionary.
schema. It outlines the structure of the database, including tables, fields, data types, and relationships between tables. This helps to organize and manage the data effectively.
The database schema is the description of the database. It defines how the database is set up and what data it is to contain and control. This description is given to the DBMS to manage the data. The database state is an image of how the database looks at any given time. The database schema is set unless you change how the database is structured. The database state will change whenever new data is entered into the database and the database is updated.
A request for data from a database is called a query. It is a command that is used to retrieve specific information from the database based on certain criteria.
Data models can be classified into three main categories: conceptual data model (high-level view of the data and its relationships), logical data model (detailed structure of the data and relationships), and physical data model (implementation of the database design on a specific database management system).
The system database that contains descriptions of the data in the database is called the data dictionary or metadata repository. It stores information about the structure, definition, and organization of data elements within the database to help users and systems work with the data effectively.
schema. It outlines the structure of the database, including tables, fields, data types, and relationships between tables. This helps to organize and manage the data effectively.
The database schema is the description of the database. It defines how the database is set up and what data it is to contain and control. This description is given to the DBMS to manage the data. The database state is an image of how the database looks at any given time. The database schema is set unless you change how the database is structured. The database state will change whenever new data is entered into the database and the database is updated.
its called data redundancy.
In database the data is stored in the form of a table. A table can be seen as some number of rows and columns. And the row of the database table is called a record .
Two standard ways to document a database are to create a relational diagram and a data dictionary.A relational diagram will display all the tables in a database with links to joining tables utilizing the primary and foreign keys. For a more detailed description visit- http://www.utexas.edu/its/windows/database/datamodeling/dm/erintro.htmlA data dictionary is a reference guide of all the tables and fields in a database and the use of each object.
A request for data from a database is called a query. It is a command that is used to retrieve specific information from the database based on certain criteria.
Data models can be classified into three main categories: conceptual data model (high-level view of the data and its relationships), logical data model (detailed structure of the data and relationships), and physical data model (implementation of the database design on a specific database management system).
Database is defines as a collection related records/data. When the data in the database is grouped based on some classification it is called database clustering.
The database we use in our daily life is called as active database . The data that is stored in the database which is further stored on the cloud is called cloud database.
The information collected from an observation is called data.
data
The system database that contains descriptions of the data in the database is called the data dictionary or metadata repository. It stores information about the structure, definition, and organization of data elements within the database to help users and systems work with the data effectively.