use same approach
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.
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.
Database
Relation is one record in the database or a tuple. Relationship is that how tables are connected to each other.
A binary relationship is a type of relationship between the entities, which links to types of entities in it.
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
Tables are the basic building blocks of a relational database.
one-to-many relationship
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.
A logical database is the structure of data. It is the different pieces of information and the relationships between them.
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
Databases are independent of the applications that use the data.