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Evidence Guide: ICAWEB425A - Apply structured query language to extract and manipulate data

Student: __________________________________________________

Signature: _________________________________________________

Tips for gathering evidence to demonstrate your skills

The important thing to remember when gathering evidence is that the more evidence the better - that is, the more evidence you gather to demonstrate your skills, the more confident an assessor can be that you have learned the skills not just at one point in time, but are continuing to apply and develop those skills (as opposed to just learning for the test!). Furthermore, one piece of evidence that you collect will not usualy demonstrate all the required criteria for a unit of competency, whereas multiple overlapping pieces of evidence will usually do the trick!

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ICAWEB425A - Apply structured query language to extract and manipulate data

What evidence can you provide to prove your understanding of each of the following citeria?

Identify SQL requirements from the specification documentation

  1. Determine information to be used from database
  2. Identify tables that hold this information
  3. Identify primary keys in these tables
  4. Identify relationships between these tables, including foreign keys
Determine information to be used from database

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Identify tables that hold this information

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Identify primary keys in these tables

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Identify relationships between these tables, including foreign keys

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Create a relational database

  1. Create tables in a database using SQL statements
  2. Identify primary and foreign keys for database table
  3. Manipulate data in a database using SQL statements
  4. Query the database using SQL statements
  5. Write SQL statements to retrieve information from database
Create tables in a database using SQL statements

Completed
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Identify primary and foreign keys for database table

Completed
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Manipulate data in a database using SQL statements

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Query the database using SQL statements

Completed
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Write SQL statements to retrieve information from database

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Test SQL results

  1. Construct test data to test SQL statements
  2. Construct expected results to verify SQL statements
  3. Verify result of the constructed SQL statements against expected results
Construct test data to test SQL statements

Completed
Date:

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Construct expected results to verify SQL statements

Completed
Date:

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Verify result of the constructed SQL statements against expected results

Completed
Date:

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Assessed

Teacher: ___________________________________ Date: _________

Signature: ________________________________________________

Comments:

 

 

 

 

 

 

 

 

Instructions to Assessors

Evidence Guide

The evidence guide provides advice on assessment and must be read in conjunction with the performance criteria, required skills and knowledge, range statement and the Assessment Guidelines for the Training Package.

Overview of assessment

Critical aspects for assessment and evidence required to demonstrate competency in this unit

Evidence of the ability to use SQL to:

create databases and tables

query one or more tables to provide required data

add, modify and delete records from tables

drop databases and tables.

Context of and specific resources for assessment

Assessment must ensure access to:

development environment

server access

database server

appropriate learning and assessment support when required.

Where applicable, physical resources should include equipment modified for people with special needs.

Method of assessment

A range of assessment methods should be used to assess practical skills and knowledge. The following examples are appropriate for this unit:

verbal or written questioning to assess candidate’s knowledge of SQL statements and procedures

review of project-based SQL application prepared by candidate.

Guidance information for assessment

Holistic assessment with other units relevant to the industry sector, workplace and job role is recommended, where appropriate.

Assessment processes and techniques must be culturally appropriate, and suitable to the communication skill level, language, literacy and numeracy capacity of the candidate and the work being performed.

Indigenous people and other people from a non-English speaking background may need additional support.

In cases where practical assessment is used it should be combined with targeted questioning to assess required knowledge.

Required Skills and Knowledge

Required skills

analytical skills to determine the elements of the SQL statement

communication skills to:

document the code

understand the client requirements

learning skills to research encountered problems independently

literacy skills to create an SQL statement using syntax

planning and organisational skills to write an SQL statement that is cross-browser compatible

problem-solving skills to translate the required outcomes from the database into SQL statements

technical skills to:

apply programming concepts

integrate SQL statements into a variety of server-side languages.

Required knowledge

features and application of:

aggregate functions:

MIN

MAX

SUM

AVG

COUNT

COUNT(*)

clause:

GROUP BY

HAVING

ORDER BY

dates and times

SQL data types

numbers

text

SQL syntax:

SELECT

FROM

WHERE

LIKE

DISTINCT

CREATE

ALTER TABLE

INSERT INTO

UPDATE

DELETE

DROP

combining condition and Boolean operators:

IN and BETWEEN conditional operators

mathematical operators

table joins.

Range Statement

The range statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance. Bold italicised wording, if used in the performance criteria, is detailed below. Essential operating conditions that may be present with training and assessment (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) may also be included.

Database may include:

Access

Informix

Microsoft Structured Query Language (MS SQL)

MySQL

Oracle

Postgre

Sybase.

SQL statements may include:

aggregate functions

conditions and Boolean operators

conditional operators

mathematical operators

table joins.

Manipulating data may include:

creating tables and rows

deleting tables and rows

adding and altering data

retrieving data.