'External schema' presentation slideshows

Introduction to Databases

Introduction to Databases. Data Organisation Definition Data modelling SQL DBMS functions. Basics of data Organisation:. DATA HIERARCHY (four categories) Fields = represent a single data item Records = made up of a related set of fields describing one instance of an entity

659 views • 55 slides

Introduction to Databases

Introduction to Databases. Data Organisation Definition Data modelling SQL DBMS functions. Basics of data Organisation:. DATA HIERARCHY (four categories) Fields = represent a single data item Records = made up of a related set of fields describing one instance of an entity

501 views • 41 slides

Describing and storing data in a DBMS

4.52k views • 37 slides

CSE 480: Database Systems

CSE 480: Database Systems. Lecture 1: Introduction. Reference: Read Chapters 1 & 2 of the textbook. Database Systems are Pervasive. Retail. Banking. Law enforcement. Database-Driven Web Sites. What is a Database?.

767 views • 37 slides

514 views • 34 slides

ITMA 322 : Database Management Systems

458 views • 25 slides

Introduction to Database Systems Chpt 1

Introduction to Database Systems Chpt 1. Instructor: Xintao Wu. http://www.sigmod.org/record/issues/0606/index.html. History. 60s C. Bachman GE network data model Late 60s IBM IMS hierarchical data model 70 E.Codd relational model

347 views • 17 slides

232 views • 14 slides