Database notes (lecture and lab material) here
Spreadsheet material here
Note on the Second ITB test are here
Database Systems Week 9
First part demonstrated the problems inherent in flattening trees into relational table
Followed by the definite DB approach – the log file of the demonstration is available (text file)
Closed World Assumption (CWA) and Negation as Failure (NAF) were covered next.
Database Systems Week 8
Material this week:
Query resolution (SLD resolution) on definite databases – building query trees / evaluating
The Datalog Educational System can be downloaded for most platforms – the Windows executable can use the ODBC interconnectivity layer to connect to Access database files.
Some of the query resolution material (in a different form) can be seen in Elmasri, R., Navathe, S., Database Systems, 6th Ed.: Chapter 24 pp. 906-920
Web Scripting for Applications Week 9
Lecture slides used during the class lecture 9
Working code for lab/lecture and exercises Working versions lab9
Exercises for this week PHP exercises 9
ITB week 8
HTTP clients and servers lecture slides
Database materials on Cartesian Product
Spreadsheet materials on importing different types of data, grouping and subgroups
This article is about the early (pre netscape) browsers that became available and promoted the WWW.
Database Systems Week 7
Covered the following subjects
Using logic to model the RDB
The Model Theoretic approach
The Proof Theoretic approach
Recasting RDBs into First Order Logic, and why the full expressiveness isn’t really required
Clausal Form: clauses, definite clauses, assertions, goal clauses and Horn clauses
Harland article: An Introduction to Deductive Database Language and Systems
The Datalog Educational System can be downloaded for most platforms – the Windows executable can use the ODBC interconnectivity layer to connect to Access database files.
There is a good introduction to this material in Elmasri, R., Navathe, S., Database Systems, 6th Ed.: Chapter 24 pp. 906-920
Web Scripting for Applications Week 7
In the lab
This lab is all about developing a CRUD system for the EMP database table set up in week 6 – the initial code required is in this zip file. Extract the file, ensuring that you maintain the directory structures given.
You will be shown how to wire this code up in class
Exercises
The exercises take you through setting up a small web site using folders, CSS and other techniques
Exercises: PHP exercises
Code for exercises: code
ITB week 7
Materials on Databases, including lecture notes and lab exercise on selection
Spreadsheet materials on building larger spreadsheet models, and more complex formulas / functionality
Web Scripting for Applications Week 6
Materials for first week back ..
Lecture 6 on mysql and php/phpmyadmin
SQL file required to set up the EMP database in mySQL empDB
SQL notes on using mySQL and the projection statement SQL Session 1
Notes on setting up your own version of MAMP (mac) Installing and using MAMP
empform code empform.php
Here are some SQL insert statements that may be useful:
insert into emp (empno,ename,sal) values (120, “SMITH”, 22000);
insert into emp (empno,ename,sal) values (121, “JONES”, 23000);
insert into emp (empno,ename,sal) values (122, “AVERY”, 22500);
insert into emp (empno,ename,sal) values (124, “MITCHELL”, 26000);
insert into emp (empno,ename,sal) values (127, “WEBB”, 22000);
insert into emp (empno,ename,sal) values (129, “TENNENT”, 22000);
insert into emp (empno,ename,sal) values (130, “RUSSELL”, 25000);
Exercise for lab: PHP exercise
Code for lab: codeforlab1
ITB week 6
ITB switches to material about spreadsheets and databases from week 6, along with lectures about Internet standards.
Database materials for this week include the lecture slides and the lab exercises
Spreadsheet materials for this week include the lecture slides and the lab exercise