The development of database

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Presentation transcript:

The development of database Tianhao Tao Yiwen Liu

What is data Data is information about facts in real world

Methods to store data Catalog card Files

History of database Computerized database started CODASYL IMS Structured Query Language, became the standard query language NoSQL and NewSQL 1960s 1970s 1980s 1990s 2000s E.F. Codd A Relational Model of Data for Large Shared Data Banks Object-Oriented Database

Features of database Data Independence Metadata Data Insulation Concurrency Data Integrity Data Security

Relational Database Relation/Table/File Attribute/Row/Record Tuple/Column/Field Schema Primary Key Foreign Key

Structured Query Language(SQL) data manipulation language (DML) data definition language(DDL) data control language (DCL) data query language (DQL)

Conclusion Database is an organised collection of data, also refers to the Database Management System(DBMS) Relational model is the most popular database model. SQL is the language used on relational database management systems.