← VCE Applied Computing U1O2

Low-code development approaches

Building software mostly by dragging and configuring ready-made blocks in a visual builder, with little hand-written code. It is faster to build but limits customisation.

Part of: VCE Applied Computing U1O2 Programming: Legal requirements and emerging trends — Module 10

Understanding Low-code development approaches in VCE Applied Computing U1O2

What it does: Reusing prebuilt blocks takes minutes, while writing login and database code by hand takes much longer. If the builder offers no setting for a feature, such as animation, you cannot easily make the block do it. Visual builders let you place and configure components on screen instead of typing everything. Ready-made blocks save time, so apps can be built faster. This speed comes at the cost of customisation. Low-code means little code, not zero code. Developers can still add small custom scripts or formulas. You can only do what the available blocks and settings allow, so unusual features can be hard or impossible to build.

Common mistakes: A setting is given a value with a single =. The double == compares values instead of assigning one. It should be set Form.title = "Sign Up". Low-code is used because ready-made blocks make development faster. It should say 'faster to build'.

Class: _____________________ · Name: _____________________ · Date: _________

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Learning

Duo

Which describes low-code development?

Building most of an app by dragging and configuring ready-made blocksWriting every line of the app by hand in a text editor

Matches

Low-code means every line is typed by hand in a text editor

↓

Low-code mostly uses drag-and-drop blocks in a visual builder, with only a little hand-written code.

Applying

Meanings

Term

low-code development

Meaning

Building software mostly by dragging and configuring ready-made blocks in a visual builder, with little hand-written code. It is faster to build but limits customisation.

Practice

Add block: Form named Feedback

Testing

Gaps

(Score >= 50, "Pass", "Fail")

Check Answer

Spots

1drag Form onto canvas

2set Form.title == "Sign Up"

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Quick Questions

1. Which describes low-code development?

A. Building most of an app by dragging and configuring ready-made blocks ✓

B. Writing every line of the app by hand in a text editor

Low-code uses a visual builder with ready-made blocks. Only a small amount of code is written by hand.

2. What is the main tool in a low-code approach?

A. A plain text file with no tools

B. A visual builder with drag-and-drop components ✓

Visual builders let you place and configure components on screen instead of typing everything.

3. A student builds a quiz app in a low-code platform in one afternoon. Which benefit does this show?

A. Unlimited customisation

B. Faster development ✓

Ready-made blocks save time, so apps can be built faster. This speed comes at the cost of customisation.

4. True or false: Low-code means NO code is ever written.

A. False: a little hand-written code is still used ✓

B. True: all code is removed completely

Low-code means little code, not zero code. Developers can still add small custom scripts or formulas.

5. A team needs a feature that the platform's blocks do not offer. Which limit of low-code is this?

A. Limits on customisation ✓

B. Slower development speed

You can only do what the available blocks and settings allow, so unusual features can be hard or impossible to build.

Match the Pairs

Drag a Button block onto the form → A visual builder lets you add ready-made parts by dragging them, instead of writing all the code

if score > 50: show_badge() → A small piece of hand-written code added to a low-code app for custom behaviour

Low-code makes development faster because ready-made blocks replace code you would otherwise write → Add Login block + Database block (2 clicks)

Low-code limits customisation because you can only change what the block settings allow → Button block: colour, size, label (no animation option)

Low-code means every line is typed by hand in a text editor → Low-code mostly uses drag-and-drop blocks in a visual builder, with only a little hand-written code.

Low-code lets you build anything exactly how you want it → Low-code limits customisation. You are restricted to what the ready-made blocks and settings allow.

Key Term

low-code development

Building software mostly by dragging and configuring ready-made blocks in a visual builder, with little hand-written code. It is faster to build but limits customisation.

Fill in the Blanks

1. If(Score >= 50, "Pass", "Fail")

Hint: Type the function name that picks one of two results depending on a condition.

2. // Hand-written code inside a Label block Label1.Text = Price * Quantity

Hint: Type the operator that multiplies two values.

3. Gallery1.Items = Filter(Products, Price < 10)

Hint: Type the function name that keeps only the rows matching a condition.

4. Label1.Text = Sum(Cart.Price)

Hint: Type the function name that adds up a column of numbers.

5. // Only this one formula is hand-written If(Stock = 0, "Sold out", "In stock")

Hint: Type the operator that tests whether two values are equal.

Spot the Error

Question 1

A drag Form onto canvas

B set Form.title == "Sign Up"

C drag Button onto canvas

Line B — A setting is given a value with a single =. The double == compares values instead of assigning one. It should be set Form.title = "Sign Up".

Question 2

A # Low-code: drag blocks

B # Result: slower to build

C # Needs little typed code

Line B — Low-code is used because ready-made blocks make development faster. It should say 'faster to build'.

Question 3

A # Block: Chart (ready-made)

B # Can set colour and title

C # Can edit any inner code

Line C — Ready-made blocks limit customisation. You can change their settings but not their inner code. The line should say it cannot be edited.

Question 4

A drag Button onto canvas

B set Button.text = "Save"

C on Button.click:

D run action "SaveRecord

Line D — The string is missing its closing quote. It should be run action "SaveRecord".

Question 5

A when Button.click

B show Message "Saved!"

C clear Form

Line A — The event line is missing the colon that introduces the actions below it. It should be when Button.click:

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