science

ObjecTime Developer

ObjecTime Developer is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand ObjecTime Developer rather than just read about it. In short: ObjecTime Developer (or ObjecTime or OTD, for short) is a software automation tool designed to meet the development needs of real-time software development teams. The tool was created by ObjecTime Limited of Kanata, Ontario, and was aimed at aiding software developers in building applications using Real-Time Object-Oriented Modeling (ROOM) for real-time, graphical design models.

Key takeaways

ObjecTime Developer belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect ObjecTime Developer to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of ObjecTime Developer from memory before moving on to harder problems.

Reference excerpt

ObjecTime Developer (or ObjecTime or OTD, for short) is a software automation tool designed to meet the development needs of real-time software development teams. The tool was created by ObjecTime Limited of Kanata, Ontario, and was aimed at aiding software developers in building applications using Real-Time Object-Oriented Modeling (ROOM) for real-time, graphical design models. ObjecTime, using the design models, will then generate production-quality applications for real-time operating systems, using the C and C++ programming languages. An important aspect of the development process using OTD was the capability to visually see the execution of the generated software as animation of the design models. This was true both for the software running both on the development or target platform. The concepts behind the modeling language described in ROOM (actors and structure/state) was gradually incorporated into UML, first as a profile for real-time (capsules and structure/state) and then as an integral part of UML 2 (composite classes). When Rational Software acquired ObjecTime Limited in 2000 their respective products — Rational Rose and ObjecTime Developer — were then merged into a product that was rechristened Rational Rose RealTime. This major changes resulted in the loss of a commercial implementation of ROOM. Today only the recently started Eclipse open source project eTrice is implementing ROOM.

Literature Bran Selic, Garth Gullekson, Paul T. Ward: Real-Time Object-Oriented Modeling. Revised edition. MBSE4U, 2023, ISBN 978-3-9822235-4-4

References

External links IBM legacy documentation:

ObjecTime — legacy documentation Rational Rose — current and legacy documentation Rational Rose RealTime — current and legacy documentation

Worked examples

Example 1 — a first encounter with ObjecTime Developer

Start with the simplest possible case. Write down what ObjecTime Developer claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to ObjecTime Developer before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about ObjecTime Developer ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of ObjecTime Developer

In research: ObjecTime Developer appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses ObjecTime Developer in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: ObjecTime Developer is common in secondary-school and first-year university syllabi. It links to neighbouring topics UML tools, Unified Modeling Language, so understanding it makes those chapters shorter.
In everyday life: Look for ObjecTime Developer outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study ObjecTime Developer in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what ObjecTime Developer means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain ObjecTime Developer out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is ObjecTime Developer in simple terms?

Why does ObjecTime Developer matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study ObjecTime Developer?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on ObjecTime Developer.