CS453: Databases and State in Web Applications (Part 2) Prof. Tom Horton.

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Presentation transcript:

CS453: Databases and State in Web Applications (Part 2) Prof. Tom Horton

Readings Textbook: –Chapter 17, Transactions On the web: –Virtual labs on MySQL –Other tutorials Quick intro: two chapters in Just Java On-line book: –PHP and MySQL Web Development. 3/e –

DBMS and Web Apps Server-side applications use a database instead of flat files What are the advantages of this?

Advantages of DBs Concurrent access Transactional integrity Backup, rollback,… Efficient storage of large amounts of data

Relational Database Model Leading model of how to organize a DB Tables Rows and columns Keys Multiple tables, with rows linked together by keys (“joins”) Tables as relationships

SQL: Structured Query Language Common query language for accessing many RDBMS –Oracle, Postgres, MySQL, Sybase, SQL Server –Slight variations between implementations Common commands: –SELECT for retrieving data –INSERT, UPDATE –ALTER

Learn More… Virtual labs, tutorials, etc. Suggestions from CS462 veterans?

Example