SQL Advanced Outline ▪ CASE ▪Subquery – nested, inline, correlated ▪ Views ▪Joins – self join, outer join ▪Set Operators ▪Oracle Functions 2 2 SQL CASE statement The CASE statement used in the select list enables the query to evaluate an attribute and output a particular value based on that evaluation SELECT unitcode, to_char(ofyear,’YYYY’) as […]
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FIT2094-FIT3171 Databases Session 3 Tutorial Activities CONCEPTUAL MODELLING FIT Database Teaching Team Complete the week 2 session 3 activities: 3.1. Conceptual Design – Demo 3.2. Using Tools to draw an Entity Relationship Diagram 3.2.1 Setting up Lucidchart 3.2.2 Creating a new LucidChart Diagram 3.2.3 FIT2094-FIT3171 Entity Relationship Diagram Standards 3.2.4 Drawing ER Diagram Using Lucidchart
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FIT2094-FIT3171 2021 SSB FIT2094-FIT3171 Databases FIT2094-FIT3171 Databases Session 3 Tutorial Suggested Solution CONCEPTUAL MODELLING FIT Database Teaching Team Author: FIT Database Teaching Team License: Copyright © Monash University, unless otherwise stated. All Rights Reserved. COPYRIGHT WARNING Warning This material is protected by copyright. For use within Monash University only. NOT FOR RESALE. Do not remove
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SQL Advanced Outline ▪ CASE ▪Subquery – nested, inline, correlated ▪ Views ▪Joins – self join, outer join ▪Set Operators ▪Oracle Functions 2 2 SQL CASE statement The CASE statement used in the select list enables the query to evaluate an attribute and output a particular value based on that evaluation SELECT unitcode, to_char(ofyear,’YYYY’) as
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The Relational Database Model MONASH INFORMATION TECHNOLOGY Overview We now have a conceptual model for Monash Software, it is time to move to the second stage and map this to a logical model For our unit this will involve mapping to the Relational Model in preparation for implementation in a RDBMS ▪ Relational Model ▪
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Update, Delete and Transaction Management MODIFYING ROWS USING UPDATE AND DELETE 2 UPDATE ▪ Changes the value of existing data. ▪ For example, at the end of semester, change the mark and grade from null to the actual mark and grade. UPDATE enrolment SET mark = 80, grade =’HD’ WHERE sno = 112233 and ……
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Oracle Functions Reference: SQL Manual 12C available from Moodle Chapter 7 pp 7-1 – 7-447 or online at: https://docs.oracle.com/database/121/SQLRF/toc.htm Oracle functions are useful for manipulating data by decomposing data elements. They use numerical, date or string values and may appear in a SQL statement wherever a value or attribute is used. Functions are categorised according
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FIT2094-FIT3171 Databases Session 9 Tutorial Activities Update, Delete and Transaction Management FIT Database Teaching Team Complete session 9 activities in week 5 listed below: 9.1 Transactions Management 9.1.1 Lock Exercise – Table 9.1.2 Lock Exercise – Practice 9.2. Using UPDATE and DELETE 9.2.1 UPDATE 9.2.2 DELETE FIT2094-FIT3171 2021 Summer B FIT2094-FIT3171 Databases Author: FIT Database
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MONASH INFORMATION TECHNOLOGY Database Design II: Logical Modelling Reference Several of the examples and diagrams used this session have been taken from: Hoffer, J. A. , Prescott, M. B. & McFadden, F. R. “Modern Database Management” 2 2 Step 2 (and 3) of the Design Process ▪ Step 1 Conceptual Model (session 2) – Database
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MONASH INFORMATION TECHNOLOGY Creating & Populating the Database – Data Definition Language User requirements Relational model theories Oracle syntax Draw Conceptual conceptual ERD ERD Draw logical level Model Logical level Model Write database schema Database schema Business rules ERD notations Normalisation 2 2 SQL general syntax ▪ A single statement is ended with SEMICOLON. ▪
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