Many to many relationship in DBMS is usually a mirror of the real-life relationship between objects that tables represent.
total 6 normal forms
1.what is a Relationship in database management system?
Hierarchical DBMSNetwork DBMSRelational DBMS
There are four types of DBMS users,Naive UsersOnline UsersApplication Program UsersDatabase AdministratorNote: The description of above points is currently not available.
1. Following are the different types of dbmsMySQLMicrosoft SQL ServerMS AccessFoxproSAPdBASETibero 6
Types of Attributes in Dbms areKey or non key attributesRequired or optional AttributesSimple or composite AttributesSingle-valued and multi-valued AttributesStored, Coded or derived Attributes
DataBase Management System (DBMS)is a software package# it allows data to be effectively stored, retrieved and manipulatedand # the data stored in a DBMS packege can be accessed by multiple users and by multiple application programs like (SQL Server, Oracle, Ms-Access) .Types of DBMS# Hierarachical DBMS (HDBMS)# Network DBMS (NDBMS)# Relational DBMS (RDBMS)# Object Oriented DataBase(OODB)# Distributed DBMS (DDBMS)
Armstrong rules are complete or sound in dbms by clarifying the types of situations which need to be achieved and done.
Degree of relationship One-to-many relationships This means how many of one entity can be related to how many of the other(s). Ask yourself how many of each entity there can be. In this kind of relationship one of the entities can be related many times to another entity. For example, one excavation can contain many finds; one person can commit many crimes.
when a relationship is optional then the value of the modality is zero. when mandatory then the modality is one.
converting er diagram to table in dbms?