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.
The first database management system (DBMS), known as the Integrated Data Store, was developed by Charles Bachman in 1963. This marked the beginning of modern database systems.
The full form of DBMS is Database Management System.
A database is useful because it provides a centralized system for storing, managing, and retrieving data efficiently. It helps maintain data integrity, enables data sharing among multiple users, enhances data security through access control, and supports complex queries and analysis.
Database is a collection of facts, figures and statistics related to an object. Data can be processed to create useful information. A knowledge base is a special kind of database for knowledge management. It provides the means for the computerized collection, organization, and retrieval of knowledge
It comes from the words "data" and "base." A base, in this definition, is a place where something is gathered or grouped together to carry out a particular activity, in the same vein as a "military base" is the place where the military gathers and performs its core activities. The term "data" (singular is "datum") is a set of information. One might literally translate this as "a place where related information is grouped together and acted upon."
The distinction between database schema and database state is very important. When we define a new database, we specify its database schema only to the DBMS. At this point, the corresponding database state is the empty state with no data. We get the initial state of the database when the database is first populated or loaded with the initial data. From then on, every time an update operation is applied to the database, we get another database state. At any point in time, the database has a current state. The DBMS is partly responsible for ensuring that every state of the database is a valid state-that is, a state that satisfies the structure and constraints specified in the schema. The DBMS stores the descriptions of the schema constructs and constraints-also called the meta-data-in the DBMS catalog so that DBMS software can refer to the schema whenever it needs to. The schema is sometimes called the intension, and a database state an extension of the schema.
the overall logical data base description is referred to as a schema. it is sometimes also referred to as an overall modal of the data, a conceptual modal of the data, a conceptual schema
1. Requirement Analysis2. Conceptual List_six_major_steps_that_you_would_take_in_setting_up_a_database_for_a_particularBase Design3. Logical Data Base Design4. Schema Refinement5. Physical Data Base Design6. Security Design
1. Requirement Analysis 2. Conceptual Data Base Design 3. Logical Data Base Design 4. Schema Refinement 5. Physical Data Base Design 6. Security Design
database is the collection of data
A data base is a collection of data.
Database is used for storing data that are related. We need database in every field for storing data.
A database.
The data base are not people but people make the data base like Steve jobs is a data base maker
A "Database"
Database
database is a software.