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INFS 1021 – Systems Analysis INFT 1020 – Database Fundamentals Lecture 1 – Course Introduction 1 Week 1 Learning Objectives Students should be able to Identify the course communication channels. Become familiar with the course website navigation and its contents. Review the contents of the Module Information Booklet including assessment items and due dates. Identify […]

DB Fundamentals DB Fundamentals Indexes Indexes Indexes are vital to efficiently accessing data An Index is a set of attributes whose values are used to control the order of tuple storage An index key may be or may not be the primary key They are generally chosen based on data columns from a table The

Lab 4 – Joining Two or More Tables and SQL Sub-queries 1 JOINING TWO OR MORE TALBES All the previous query examples that you have worked on are related to only one table. The join feature of SQL lets you select data from two or more tables and combine the selected data into a single

Lab 2 – Queries, Arithmetic Expressions and Functions 1. Objective This set of laboratory exercises illustrates some more advanced features of SQL and SQL*Plus expressions. The number of examples to try is large, yet you are advised to complete all of them, both in and outside your timetabled lab classes. As with the previous handout,

Lab 3 – Aggregate Functions, Group By and Having Clauses 1. AGGREGATE FUNCTIONS In all the examples so far, we have selected values stored in each row of a table (like SAL), or values calculated for each row (like SAL*12). That is, we have selected information about individual rows stored in the database. You can

CS3402: Chapter 6 SQL: Structured Query Language II CS3402 1 – Structure of Basic SQL Queries ◼ SELECT statement ◆The basic statement for retrieving information from a database The SELECT FROM – WHERE Specified attributes Title Year Length Type Star War 1977 124 Color Mighty Duck 1991 104 Color Wayne’s World 1992 95 Color Satisfy