Unit of competency Outline

Date retreived
22/07/2026 10:18 AM AWST

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Use structured query language

Use structured query language

Unit of competency
National Code
ICTPRG425
State Code
AUV63
TGA Status
Replaced
DTWD Status
Replaced
Current Release Number
1.00
Current Release Date
25/03/2015
View on TGA
State Implementation and Classification
Approved Date
16/09/2015
Field of Education
020103 - Programming
Original Release Date
16/09/2015
Nominal Hours
55
Description
This unit describes the skills and knowledge required to use a structured query language (SQL) to define, create, and manipulate database structures, and the associated data in a relational database.It applies to individuals in a wide variety of information and communications technology (ICT) roles, where relational databases and SQL are being used.No licensing, legislative or certification requirements apply to this unit at the time of publication.
Notes
Elements and Performance Criteria
1. Write a simple SQL statement to retrieve and sort data
  • 1.1 Retrieve all the data from a single table
  • 1.2 Retrieve data from specific columns in a single table
  • 1.3 Use 'order by' to sort query output
2. Write an SQL statement that selectively retrieves data
  • 2.1 Restrict the number of rows retrieved, by placing criteria in the 'where' clause
  • 2.2 Restrict the number of rows retrieved, by placing specific criteria in the select statement
  • 2.3 Use comparison operators in the 'where' clause to compare numeric, character, string, date and time data
  • 2.4 Use Boolean operators with the correct precedence
  • 2.5 Use criteria in the 'where' clause, to check for a range of values, to select values from a list, and to check for values that match a pattern
  • 2.6 Use SQL syntax to suppress duplicate values from query results
  • 2.7 Take action to exclude null values from a query result
3. Write SQL statements that use functions
  • 3.1 Use arithmetical operators with the correct precedence
  • 3.2 Use string functions, and operators, to obtain the required query output
  • 3.3 Use mathematical functions to obtain the required output
  • 3.4 Use date functions to obtain the required output
  • 3.5 Use SQL aggregate functions to obtain the required output
4. Write SQL statements that use aggregation and filtering
  • 4.1 Use 'group by' to aggregate data by multiple columns
  • 4.2 Sort aggregated data in the query output
  • 4.3 Filter aggregated data using the 'having' clause
5. Write SQL statements that retrieve data from multiple tables
  • 5.1 Employ the inner join syntax, to retrieve data from two or more tables
  • 5.2 Use 'left outer', 'right outer' and 'full outer' syntax, to join tables in the select statement
  • 5.3 Use correct syntax in the 'where' clause, to retrieve data from multiple tables
  • 5.4 Write a union query that retrieves data from more than one table
6. Write and execute SQL sub-queries
  • 6.1 Construct single and nested sub-queries
  • 6.2 Construct sub-queries that return a single row and multiple rows
  • 6.3 Use correlated sub-queries to retrieve required data
  • 6.4 Write sub-queries that use aggregates
7. Create and manipulate tables
  • 7.1 Identify the required columns, data types, keys, relationships, indexes and constraints
  • 7.2 Use the relevant naming conventions for database elements
  • 7.3 Create tables that implement the required elements
  • 7.4 Manipulate tables to meet specific requirements
8. Create and use views
  • 8.1 Create views that satisfy information requirements
  • 8.2 Use check constraints in a view
  • 8.3 Retrieve, insert, update, and delete data using a view
  • 8.4 Drop a view from a database
9. Create and use stored procedures
  • 9.1 Create and execute stored procedures that use SQL to retrieve, insert, or modify data, according to information requirements
  • 9.2 Create and execute stored procedures, that use one or more parameters
  • 9.3 Drop a stored procedure from the database
  • 9.4 Create and test database triggers that automate data management, or perform specific required data-related functions
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Replaces
State Code National Code Title Type
D8012 ICAPRG425A Use structured query language Unit of competency
Replaced By
State Code National Code Title Type
OBS17 ICTWEB451 Apply structured query language in relational databases Unit of competency