Microsoft Access 2002 By Ian Cole Lecturer in ICT

Access Overview Database Theory: Creating a Database: Designing and creating a relational database. Familiarisation with the Access screen. Opening,viewing and creating tables. Imputting Data. Sorting and filtering tables. Creating reports.

Session Plan Introduction. Relational Theory. Normalisation. Microsoft Access. Tables Forms Queries Self – Directed Workbook

Introduction What is a Database? Telephone Book. Patient Records A Timetable. Student Records Systems. Different types of Database! hierarchical database (1960 & 1970’s) relational databases (Access)

Relational Theory Hello there! My names Sid Hi call me Pid Would you like to have relations Mmmm!! Yes please

Relational Theory Hello Son Mummy! Daddy! My baby!!!

Relational Theory

Is Excel a Relational Database?

Database Normalisation Codd's Law a set of 13 rules used to determine if a database can be considered a Relational Database. It’s all my fault

Database Normalisation Normalisation is to reduce data redundancy and the chances of data becoming inconsistent. A table in a relational database is said to be in normal form if it satisfies certain constraints - Codd's original work defined three forms but there are now five generally accepted steps of normalisation. First Normal Form eliminates repeating groups by putting each into a separate table and connecting them with a one-to-many relationship (1NF). Second Normal Form eliminates functional dependencies on a partial key by putting the fields in a separate table from those that are dependent on the whole key (2NF). Third Normal Form eliminates functional dependencies on non-key fields by putting them in a separate table. At this stage, all non-key fields are dependent on the key, the whole key and nothing but the key. Fourth Normal Form separates independent multi-valued facts stored in one table into separate tables. Fifth Normal Form breaks out data redundancy that is not covered by any of the previous normal forms.

Database Normalisation Cole’s Law Don’t duplicate data in a database or it won’t work properly.

Structured Query Language SELECT "column_name" FROM "table_name“ WHERE "condition" Never mind SQL I keep thinking BLOODY HELL!!!!!

Structured Query Language SELECT "column_name" FROM "table_name“ WHERE "condition" Example: SELECT Red FROM P table WHERE city = ‘London’

Microsoft Access Tables Different views Records Fields Columns Primary Key

Microsoft Access Tables Different views Records Fields Columns Forms

Microsoft Access Tables Different views Records Fields Columns Forms Sorting – temporary Queries – Permanent (new table)

Microsoft Access Database Window Always open Toolbars Contextual No need to save Workbook Ask questions at any time