The entity relationship diagram shows the relationship between different things via a diagram. The diagram on a matrimonial website can help to show if the partners are compatible.
-Used when we have to model a relationship involving (entitity sets and) a relationship set.-Aggregationallows us to treat a relationship set as an entity set for purposes of participation in (other) relationships.
ER means that Entity relationship diagram that shows about system interaction on water and sewerage system development.Which is used fast and suficent water bill distribution for customers .
The primary key of a weak entity set is formed by taking the primary key of the strong entity set on which its existence depends (see Mapping Constraints) plus its discriminator. A strong entity set has a primary key. All tuples in the set are distinguishable by that key. A weak entity set has no primary key unless attributes of the strong entity set on which it depends are included. Tuples (a particular row) in a weak entity set are partitioned according to their relationship with tuples in a strong entity set. Tuples within each partition are distinguishable by a discriminator, which is a set of attributes.
Gust starting out
Do you mean that you need to prepare an Entity - Relationship diagram for an existing database?Clyde
An entity relationship diagram for hotel reservation systems is a map of each entity or thing that has a part in the process of hotel reservations. The diagram maps the relationship between each entity of the process.
An entity relationship diagram (ERD) represents the entities, or groups of information, and their relationships maintained for a business. An entity relationship diagram represents the entities, or groups of information, and their relationships maintained for a business. An entity relationship diagram represents the entities, or groups of information, and their relationships maintained for a business.
relationship.....
entity relationship diagram on banking system?
draw complete entity relationship diagram for railway reservation system
converting er diagram to table in dbms?
To draw a relationship diagram, start by placing relationship at the center of the paper. Connect entities to the relationship, and branch out with the different attributes.
i need a entity relationship diagram of a small library
An entity-relationship diagram of a grading system can be viewed by visiting this website at http://stackoverflow.com/questions/9486156/er-diagram-for-grading-system. There is information included with the diagram about the grading system.
An entity-relationship diagram for online banking includes the process of online banking and the relationship between each step. It is a model that maps out, describes, and defines how components are linked for online banking.
er travel agent؟