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What are relationship between information system lifecycle and the database system development lifecycle?
The relationship between the information system life cycle and the database system development life cycle is that the informational systems help management entities to shift and move resources from one department to another easily by using a shared database system.
what are the relationship between the information system lifecycle and database system development lifecycle.?
The information system lifecycle focuses on the entire system development process, including planning, analysis, design, implementation, and maintenance. The database system development lifecycle is a subset of this, specifically focusing on the database design, implementation, and maintenance within the broader information system context. Both lifecycles work together to ensure that the database system supports the overall information system requirements and objectives.
Distinguish between a relation and a relationship in database?
Relation is one record in the database or a tuple. Relationship is that how tables are connected to each other.
An association between entities is known as?
Database
Binary relationship in database?
A binary relationship is a type of relationship between the entities, which links to types of entities in it.
What is the relationship between the internet and database?
The internet is a giant database with many different databases used for multiple things: information, useless facts, homework help, ect. Databases are what make up the Internet
How are relationship between tables expressed in a relational database?
Tables are the basic building blocks of a relational database.
What is the difference between relationship type and relationship instance in database?
In a database, a relationship type defines the abstract structure and constraints of how entities are related, including cardinality and participation rules. In contrast, a relationship instance represents a specific occurrence of that relationship type, linking actual records in the database. Essentially, the relationship type serves as a blueprint, while the relationship instance is the tangible connection between entities in the data.
What is the most common type of relationship between tables in a relational database?
one-to-many relationship
What is the main purpose of relating data between tables in a database?
The main purpose of relating data between tables in a database is to establish connections between different pieces of information, allowing for efficient querying and retrieval of data. This relationship helps to avoid data duplication and ensures data integrity by enforcing constraints and maintaining consistency across the database.
How do you draw an entity-relationship model?
to draw an Er-diagram you need >> objects >> relationship between these objects >>database associated with each object and relationship er digram is a graphical representation of a database and its tables first u hav to create database needeed for entire system after this identify primarykey/key attribute for each table and establish relationship between objects
What is a logical database?
A logical database is the structure of data. It is the different pieces of information and the relationships between them.
