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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.
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∙ 13y ago
The database state refers to the current data stored in the database, including all records and their values. On the other hand, the database schema refers to the structure of the database, including tables, columns, constraints, and relationships. The schema defines how the data is organized and stored in the database.
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When was a data base invented?
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.
What is the fullform of DBMS?
The full form of DBMS is Database Management System.
Why is a data base useful?
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.
What is the difference between a knowledge base and a database?
A knowledge base is a centralized repository for information that is organized and searchable for easy access, typically used for storing structured and unstructured information. A database, on the other hand, is an organized collection of data that is stored and managed using database management systems (DBMS) for structured data storage, retrieval, and manipulation. In essence, a knowledge base can be considered a specialized type of database that focuses on storing knowledge in a more user-friendly and accessible format.
Why is a database called a database?
A database is a collection of data organized in a way that allows for efficient storage, retrieval, and updating. It is called a "database" because it is a structured set of information that can be accessed and managed systematically. The term "database" highlights the ability to store and retrieve data in a structured and organized manner.
Difference between database schema and a database state in dbms?
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.
Difference between schema sub schema and instance in DBMS in detail?
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
What six major steps would you take in setting up a database in a particular enterprise?
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
List six major steps that you would take in setting up a database for a particular?
1. Requirement Analysis 2. Conceptual Data Base Design 3. Logical Data Base Design 4. Schema Refinement 5. Physical Data Base Design 6. Security Design
What is the definition of database?
A data base is a collection of data.
What are the characteristics of a data base?
database is the collection of data
Why do you have data base?
Database is used for storing data that are related. We need database in every field for storing data.
What is a collection of data that is stored electronically as a series of records in a table?
A database.
Who are the database users?
The data base are not people but people make the data base like Steve jobs is a data base maker
Data organized in a way that allows access and use of that data?
A "Database"
Is a data base hardware or software?
database is a software.
What is an organized collection of information?
Database
