Introduction to Database Systems Module 1, Lecture 1
Database Management Systems , R. Ramakrishnan1Introduction to Database SystemsModule 1, Lecture 1Instructor: Raghu Management Systems , R. Ramakrishnan2What Is a DBMS?vA very large, integrated collection of real-world enterprise. Entities ( , students, courses) Relationships ( , Madonna is taking CS564)vA Database Management System (DBMS) is asoftware package designed to store andmanage Management Systems , R. Ramakrishnan3Why Use a DBMS?vData independence and efficient application development integrity and data access, recovery from Management Systems , R.
Database Management Systems, R. Ramakrishnan 5 Data Models A data model is a collection of concepts for describing data. A schema is a description of a particular collection of data, using the a given data model. The relational model of data is the most widely used model today. – Main concept: relation, basically a table with rows and columns.
Download Introduction to Database Systems Module 1, Lecture 1
Information
Domain:
Source:
Link to this page:
Please notify us if you found a problem with this document: