C2090-913
Informix 4GL Development
C2090-913 Exam Guide: Informix 4GL Developer Preparation and Study Roadmap
C2090-913 validates intermediate-to-advanced ability to design and develop Informix database applications with Informix 4GL. IBM’s certification roadmap maps the exam to the IBM Certified Solution Expert, Informix 4GL Developer credential, and IBM’s archived guide states that passing Exam 913 is required for that certification. This guide helps you decide whether your current application-development experience is sufficient, which blueprint areas deserve the most study time, and how to build evidence of readiness without relying on recalled or unauthorized exam content.
What does C2090-913 validate?
C2090-913 is aimed at candidates who can design and develop Informix database applications using Informix 4GL at an intermediate-to-advanced level. The official roadmap maps C2090-913 to IBM Certified Solution Expert, Informix 4GL Developer, while IBM’s archived Exam 913 guide states that passing the exam is required to earn that certification.
The credential decision is therefore more specific than a general database qualification. You should prepare for the work of constructing and reasoning about Informix 4GL applications, not just for isolated syntax recognition. Your preparation should connect program statements, cursors, memory, functions, forms, reports, and supporting utilities into complete application tasks.
The evidence available for this exam comes from IBM’s archived Exam 913 guide and IBM’s certification roadmap. Because the guide is archived, treat its stated exam structure and requirements as the supplied official reference, then verify current registration and administration information with IBM before scheduling. The roadmap is available at https://public.dhe.ibm.com/software/data/sw-library/education/cert-roadmaps/All_Exams.pdf.
Is this exam a sensible fit for your background?
C2090-913 is a better fit for someone who already works with Informix database applications or can study Informix 4GL in a functioning development environment. If you are beginning with programming or relational database development, start with foundational practice before treating this as an exam-only project.
Use the following decisions to assess fit:
• Choose a direct exam-preparation path if you can read existing Informix 4GL code, explain how it interacts with database data, and troubleshoot the relationships among statements, cursors, memory, functions, forms, and reports.
• Choose a skills-building path first if you recognize the terminology but cannot yet create or modify a small application. The exam guide describes the target capability as intermediate-to-advanced, so recognition alone is a weak readiness signal.
• Choose a structured learning path if you need guided coverage of the language and application-development workflow. IBM’s archived guide lists Developing Applications Using Informix 4GL (L1007) as a four-day classroom course and Advanced Informix 4GL Development (L2224) as a three-day classroom course. These are official course listings, not a claim that completing either course guarantees a pass.
A useful readiness test is to select an unfamiliar practice task and document your approach before looking at a solution. If you can identify the required program structures, data-handling steps, interface elements, and output mechanism, your study can focus on refinement. If you cannot decompose the task, build the fundamentals first.
How is the exam blueprint weighted?
The supplied IBM guide specifies 90 questions and a passing mark of 78 percent or greater. It also assigns different percentages to named subject areas, making the blueprint useful for deciding where to spend practice time. Those figures come from IBM’s archived Exam 913 guide: https://public.dhe.ibm.com/software/data/education/exam-913.pdf.
The largest supplied allocation is 28% of the exam to statements. The guide also allocates 18% of the exam to Informix 4GL and 13% of the exam to cursors and memory. These areas should form the centre of your preparation rather than being treated as three interchangeable labels.
The guide allocates 6% of the exam to passing values between functions, 4% of the exam to displaying forms and windows, and 4% of the exam to forms that use arrays. It allocates 3% of the exam to defining program variables, 3% of the exam to creating a report driver, and 1% of the exam to creating a help file with the mkmessage utility.
Do not interpret a percentage as a list of every skill tested within that domain. A domain label can involve several related decisions, and questions may require you to understand how one part of an application affects another. Use the weights to set study priority, then use task-based practice to connect the domains.
The supplied facts do not provide a complete list of all blueprint domains or enough information to reconstruct the entire exam. Do not manufacture missing percentages or assume that the listed allocations add up to the full exam. Use the official guide as the controlling reference for any topic not covered in this article.
A practical priority order
Begin with statements, Informix 4GL, and cursors and memory because those are the largest supplied allocations. Then strengthen values between functions, forms and windows, and forms that use arrays. Finish with variables, report drivers, and mkmessage while revisiting the larger domains through integrated exercises.
This is a preparation recommendation, not an IBM rule. A candidate with strong language knowledge but weak cursor and memory work may need to reverse the order. The best allocation reflects both the official weights and the gaps revealed by your own practice.
How should you study statements and Informix 4GL?
Treat statements and Informix 4GL as working skills, not a vocabulary list. You should be able to predict what a code fragment does, identify the information it needs, and explain how a change affects the rest of the application. The official guide assigns 28% of the exam to statements and 18% to Informix 4GL, so these areas merit repeated practice.
Create a personal reference organized by task rather than alphabetically. For each statement or language construct you study, record its purpose, the data or program state it affects, the conditions under which it is valid, and one small example that you can explain line by line. Keep the examples short enough to troubleshoot.
A productive sequence is:
• Read a small program and mark its inputs, processing steps, database interactions, user-interface actions, and outputs.
• Rewrite one section without changing its intended result. Compare the control flow and identify any assumptions you introduced.
• Introduce one controlled change, such as a different condition or value source, and trace the result before executing it.
• Review the error or unexpected result by locating the first incorrect assumption rather than patching the final symptom.
This method trains discrimination between plausible alternatives. Exam questions can make several choices look syntactically familiar; the stronger answer is the one consistent with the program’s purpose, data flow, and execution context. Do not reduce this domain to memorizing fragments outside an application context.
A common mistake is to spend most of the study time copying examples. Copying can create familiarity without proving that you understand why each part is present. After reading an example, close the reference and reconstruct its logic from the requirement. Then test your reconstruction with a small variation.
How can you make cursors and memory a study priority?
Cursors and memory account for 13% of the exam in the supplied guide. Study them by tracing the life of data through an application: how it is obtained, where it is held, how it is used, and what must happen when processing moves on. This is more reliable than memorizing isolated cursor or memory terms.
For each practice exercise, draw a simple state trace. Identify the point at which data becomes available, the operation that consumes or changes it, and the point at which the application no longer needs it. Note what the surrounding code assumes about the current state. This makes hidden dependencies visible before they become debugging problems.
Use variations that test one concept at a time. For example, keep the business requirement constant while changing the order of processing, the amount of data handled, or the path taken when a condition is not met. Your notes should explain the consequence, not merely state that the result was different.
Prioritize diagnosis questions:
• What data is available at this point in execution?
• Which operation controls the next item or next state?
• What happens when there is no expected data or when processing reaches its boundary?
• Which values must remain available for a later function or form action?
• What part of the program should be changed to correct the state transition?
Avoid a frequent preparation error: reading cursor-related code only for its intended successful path. Build at least one branch that tests an empty, completed, or otherwise exceptional path, then explain what the application should do. This practice develops reasoning that can transfer to unfamiliar examples without depending on recalled test questions.
How do functions, variables, forms, and windows fit together?
The blueprint connects several smaller allocations to the way an application is assembled. The guide assigns 6% to passing values between functions, 3% to defining program variables, 4% to displaying forms and windows, and 4% to forms that use arrays. Study these as interfaces between program components rather than as unrelated low-weight topics.
Start by writing the contract for each function in plain language: what it receives, what it changes, what it returns or makes available, and what the caller must already have established. Then inspect whether your example actually honours that contract. This exposes errors caused by mismatched assumptions even when individual statements appear familiar.
For variables, maintain a table with the variable’s role, expected type or shape, scope in the exercise, and the operations performed on it. The purpose is not to create an elaborate documentation system. It is to stop variable definitions from becoming disconnected memorization and to make later debugging deliberate.
For forms and windows, practise the full interaction rather than only the display step. Identify the event or program action that causes the interface to appear, the data it needs, the response it produces, and the point at which control returns to the application. Then repeat the exercise with a form that uses arrays, paying attention to how the collection is populated and consumed.
A useful integration exercise is a small application flow with one data-retrieval step, one function boundary, one form, and one array-backed interaction. Keep the business requirement simple. The learning objective is to explain the movement of values across components and to identify exactly where a defect enters the flow.
Do not infer that a smaller percentage makes a topic optional. Low-weight areas can still expose a gap in an otherwise strong preparation plan, particularly when they are included in an integrated question. Give them focused coverage, then connect them to the larger language and application exercises.
What should you practise for reports and mkmessage?
The supplied guide assigns 3% of the exam to creating a report driver and 1% to creating a help file with the mkmessage utility. These topics should receive targeted, demonstrable practice: learn the purpose of each component, the inputs it needs, and how it fits into the application rather than spending disproportionate time on them.
For a report-driver exercise, begin with the output requirement. Identify the data source, the sequence in which records are processed, the values the report needs, and the point at which the application hands information to the reporting logic. Write a short explanation of the control flow before reviewing the implementation.
For mkmessage, focus on the role of the utility in creating a help file and on the relationship between the source information, the utility operation, and the resulting application support material. Use the exact terminology from the official guide when building your notes, and verify any command details against authoritative IBM material rather than an unverified summary.
These areas are easy to postpone indefinitely because their allocations are smaller. Put them into a completion checklist with one working exercise and one explanation exercise. The first proves that you can follow the process; the second proves that you understand why the process belongs in the application.
Do not let a command-focused study session become a substitute for larger-domain practice. Once you can explain the report-driver and mkmessage tasks, return to statements, Informix 4GL, and cursors and memory. Your aim is balanced readiness, not perfect mastery of one small blueprint item.
What is a practical study sequence?
Use a staged sequence that moves from diagnosis to construction, then from construction to timed decision-making. This prevents passive reading from dominating your preparation and gives you a clear stop-or-continue decision before scheduling. The sequence below is a recommendation based on the supplied blueprint, not an IBM-mandated course plan.
Stage one: establish the baseline. Read the official Exam 913 guide, list every named domain and mark each as confident, familiar, or uncertain. Build a separate list of topics that the supplied summary does not describe in detail. Do not fill those gaps with assumptions; consult the official source or leave them marked for verification.
Stage two: refresh the core. Work through statements, Informix 4GL, and cursors and memory in that order unless your baseline shows a clear weakness that requires a different starting point. For each topic, produce notes from an actual code or application task. A definition without an explained example does not count as completed review.
Stage three: build connected exercises. Combine functions, variables, forms, windows, and arrays in small application flows. Add a report-driver task and a mkmessage task as separate focused exercises. Keep a record of the defect, the incorrect assumption, and the correction for every problem you encounter.
Stage four: practise discrimination. Convert your notes into questions that ask what happens next, which component owns a value, or which change best satisfies a stated requirement. Answer before checking the reference. Explain why the alternatives are weaker; this is more useful than recording only the correct choice.
Stage five: perform a readiness review. Revisit every uncertain domain, then complete a mixed review in which you cannot choose the subject area in advance. Mark questions that took too long or depended on a guess. Schedule only when your performance is repeatable and your remaining gaps are understood.
A practical study log can contain five columns: subject area, task attempted, result, reason for the error, and next action. This turns vague concerns such as “weak on 4GL” into a decision such as “retrace values across a function boundary, then repeat the integrated form exercise.”
How should you decide when to schedule?
Schedule after you can explain your reasoning across mixed topics and have checked the current IBM administration information. The archived guide specifies 90 questions and a passing mark of 78 percent or greater, but the supplied evidence does not establish current registration procedures, delivery method, appointment availability, or other live scheduling details.
Use the passing mark as a readiness reference, not as a promise that a particular practice result will translate directly to the exam. Keep a margin for uncertainty by reviewing questions you answered correctly for the wrong reason. A lucky answer is a gap, not evidence of mastery.
Before booking, confirm the current exam title, code, administration instructions, and any candidate requirements through IBM. The certification roadmap can confirm the mapping between C2090-913 and the Informix 4GL Developer credential, while the archived guide provides the supplied blueprint facts. IBM’s support page is available at https://www.ibm.com/support/pages/bulletin/search/.
Which learning resources should you choose?
Use the official Exam 913 guide as the blueprint anchor, then select practice material that lets you build and inspect Informix 4GL application behaviour. IBM’s archived guide lists Developing Applications Using Informix 4GL (L1007) and Advanced Informix 4GL Development (L2224) as classroom courses; the listings can help you choose between a foundational and advanced learning emphasis.
Choose L1007-oriented study if your weakness is the basic construction of Informix 4GL applications, including the relationship between language statements and application flow. Choose L2224-oriented study if you can already build or read applications but need more demanding development practice. These are preparation decisions based on the course titles and the target capability, not claims about current availability or course content beyond the supplied guide.
For self-directed work, prefer resources that include executable or inspectable examples, clear explanations of expected behaviour, and opportunities to modify the code. Keep source authority separate from convenience: a third-party explanation may be useful for practice, but it should not override the official blueprint or establish current exam facts.
Avoid any product or training page that claims to reproduce live questions, guarantees a pass, or encourages memorization of answer strings. Such material does not demonstrate application skill and can leave you unable to reason about a changed scenario. Build your own explanations from legitimate study material instead.
Check the archived guide for the official course names and exam facts, and confirm current IBM information before making a purchase or scheduling decision. The guide is at https://public.dhe.ibm.com/software/data/education/exam-913.pdf.
What preparation mistakes are most costly?
The most costly mistake is preparing for a language quiz instead of an application-development assessment. C2090-913 targets the design and development of Informix database applications, so your study should repeatedly connect syntax to data flow, functions, forms, reports, and application behaviour.
Mistake one: spending equal time on every topic without using the blueprint. The supplied guide assigns 28% to statements, 18% to Informix 4GL, and 13% to cursors and memory. Give those domains substantial practice, while still completing focused reviews of the smaller named areas.
Mistake two: treating a course title as proof of readiness. A listed classroom course may provide structure, but you still need to reproduce tasks, troubleshoot them, and explain your choices. Use course material as an input to practice, not as a replacement for practice.
Mistake three: studying only successful execution paths. For every exercise, ask what happens when a value is missing, a condition changes, processing reaches its boundary, or a component receives an unexpected state. The point is to develop controlled reasoning, not to collect happy-path examples.
Mistake four: confusing familiarity with recall. If you recognise a statement but cannot predict its effect in context, return to a small working example. Explain the result without looking at your notes, then vary one assumption.
Mistake five: assuming the archived guide answers every current administrative question. It supplies the verified facts used here, including the question count and passing mark, but it does not establish current scheduling or delivery details in the supplied research. Verify those details with IBM before acting.
Mistake six: using exam dumps or leaked-question claims. Memorized answers do not establish competence, may be unauthorized, and cannot guarantee a passing result. Use legitimate exercises and the official blueprint instead.
How can you turn the blueprint into a personal checklist?
A checklist is useful when each item requires observable evidence. Replace “review forms” with “build or analyse a form-and-window flow and explain its data requirements.” Replace “study functions” with “trace values into and out of a function and identify the caller’s responsibility.” This makes readiness easier to judge honestly.
Use one checklist line for each supplied allocation:
• Statements — explain and modify representative application logic; official allocation: 28% of the exam to statements.
• Informix 4GL — construct or analyse language-level application behaviour; official allocation: 18% of the exam to Informix 4GL.
• Cursors and memory — trace data and state through processing; official allocation: 13% of the exam to cursors and memory.
• Passing values between functions — document and test the function boundary; official allocation: 6% of the exam to passing values between functions.
• Displaying forms and windows — complete the interaction from invocation to return; official allocation: 4% of the exam to displaying forms and windows.
• Forms that use arrays — practise collection-backed interface data; official allocation: 4% of the exam to forms that use arrays.
• Defining program variables — identify the role and use of variables in a small program; official allocation: 3% of the exam to defining program variables.
• Creating a report driver — follow the report-processing flow from requirement to output; official allocation: 3% of the exam to creating a report driver.
• Creating a help file with the mkmessage utility — complete a focused utility exercise and explain its purpose; official allocation: 1% of the exam to creating a help file with the mkmessage utility.
The percentages above are attached to their official domain labels exactly because a bare percentage can be misleading. They are not a substitute for the full guide, and they should not be added to create an assumed complete blueprint when the supplied facts do not list every domain.
What should you do before and after booking?
Before booking, confirm that you are preparing for C2090-913 and that the credential mapping still matches your professional objective. Then review the official guide, identify your three weakest named areas, and complete at least one integrated exercise that crosses a language construct with an application component.
Use this pre-booking sequence:
• Confirm the current IBM exam and certification information rather than relying only on an archived document.
• Build your blueprint checklist from the named domains and record evidence for each item.
• Practise the largest supplied domains first: statements, Informix 4GL, and cursors and memory.
• Complete targeted exercises for functions, variables, forms, windows, arrays, report drivers, and mkmessage.
• Perform mixed review and investigate every guess, not only every wrong answer.
• Decide whether a listed IBM course would address a specific gap; do not enrol merely because a course appears in the archived guide.
After booking, stop expanding your resource collection. Consolidate your notes, repeat representative tasks, and protect time for error analysis. A final review should answer “why does this work?” and “what changes if the condition or data flow changes?” rather than attempt to memorise a large set of disconnected facts.
On the day before the exam, use only confirmed administrative instructions from IBM and your own concise notes. The supplied research does not establish current delivery details, required identification, permitted materials, or appointment rules, so this article does not invent them. Check the current official instructions for those matters.
What is the final readiness decision?
You are ready to move from study to scheduling when you can work across the named domains, explain the movement of data and control through a small Informix 4GL application, and distinguish a correct solution from a merely familiar one. If your knowledge is concentrated in syntax but not application flow, continue practising before booking.
Use the official facts as boundaries for your plan: IBM’s archived guide states that Exam 913 consists of 90 questions and requires a passing mark of 78 percent or greater, and it describes the target capability as intermediate-to-advanced Informix database application development. The same guide provides the supplied domain allocations.
Your next action should be concrete. Download the official guide, create the checklist, run a baseline exercise, and choose the next study stage from the result. If the credential is your objective, confirm the roadmap mapping and current IBM requirements before scheduling. If the work itself is your objective, prioritise the application skills even if you postpone the exam decision.
The certification roadmap is available at https://public.dhe.ibm.com/software/data/sw-library/education/cert-roadmaps/All_Exams.pdf. The Exam 913 guide is available at https://public.dhe.ibm.com/software/data/education/exam-913.pdf. IBM’s support page is available at https://www.ibm.com/support/pages/bulletin/search/.
Conclusion
C2090-913 preparation should end with a capability decision, not a larger pile of notes. Use the archived IBM blueprint to set priorities, give the greatest attention to statements, Informix 4GL, and cursors and memory, and prove smaller topics through focused exercises. Then verify current IBM scheduling and certification information before committing. A candidate who can explain and troubleshoot complete Informix 4GL application flows has a stronger basis for the exam and for the work the credential represents.