degree of data abstraction
er model in dbmsimportance of data models in dbms
types of data model
business rules in dbms
basic building blocks of data models
types of entities in dbms
what are the basic building blocks of a database

Data Model Basic Building Blocks. 1 Data Model Basic Building Blocks. 2 Basic Building Blocks of Data. 3 Attribute Is a characteristic of an entity. 4 Relationship Describes an association among entities. 5 Three types of Relationship. 6 Constraint Is a restriction place on data. Data Model Basic Building Blocks Entity anything about which data are to be Imposes a database standard – Resembles hierarchical model • Record may 30 Mar 2010 The basic building blocks of all data models are entities, attributes, and relationships. An entity is anything, such as a person, place, thing, or event, about which data are to be collected and stored. Entities may be physical objects such as customers or products. DBMS ER Model Basic Concepts - Learn DBMS in simple and easy steps starting from its overview, Architecture, data models, data schemas, data •Why data models are important. •About the basic data-modeling building blocks. •What business rules are and how they affect database design. •How the major 23 Data Model Basic Building Blocks 1 Explain that an entity is anything about to see concrete examples of entities, attributes, and relationships in a database. Data Model Basic Building Blocks. Basic Building Blocks of Data. Entity. Is anything (a person, a place, a thing, or an event); Represents a particular type of About the basic data-modeling building blocks. ? What business About emerging alternative data models and the need Give an overall view of the database.16 Mar 2015 Database Systems: Design, Implementation, and Management 6 Data Model Basic Building Blocks • Entity: anything about which data are to Data modeling and why data models are important. • The basic data-modeling building blocks. • What business rules are and how they influence database