PDF Version DemoThe IBM Cognos 10 BI Multidimensional Author exam has a reputation for breadth, and many candidates underestimate how much ground it covers. Getcertkey closes those gaps with 57 practice questions that reflect the style and difficulty you can expect in 2026.
IBM C2090-645 Exam Overview:
| Certification Vendor: | IBM |
|---|---|
| Exam Name: | IBM Cognos 10 BI Multidimensional Author |
| Exam Number: | C2090-645 |
| Available Languages: | English |
| Related Certifications: | IBM Cognos BI Modeler IBM Cognos Analytics certifications IBM Cognos BI Report Author |
| Exam Format: | Multiple choice questions |
| Exam Duration: | 90 minutes |
| Recommended Training: | IBM Cognos BI training courses |
| Exam Registration: | IBM Certification Registration |
| Sample Questions: |  |
| Exam Way: | Online proctored or authorized testing center |
| Pre Condition: | Recommended experience with IBM Cognos BI tools and basic data warehousing/OLAP concepts. No strict formal prerequisite is publicly enforced. |
| Official Syllabus URL: | https://www.ibm.com/training/certification |
IBM C2090-645 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Performance and Best Practices | - Optimizing cube and query performance - Efficient report design principles |
| IBM Cognos BI Architecture and Components | - Server components and services - Cognos 10 architecture overview |
| Querying and Data Interaction | - Filters and calculations in dimensional queries - Member selection and context filtering |
| Report Authoring and Analysis | - Drill-down and drill-through capabilities - Analysis Studio for multidimensional analysis - Report Studio dimensional reporting |
| Framework Manager Modeling | - Star schema and snowflake modeling - Dimensional model design - Relationships and query subjects |
| Multidimensional Data Modeling | - Measures and aggregation behavior - OLAP concepts and cube structure - Dimensions, hierarchies, and levels |
| Security and Deployment | - Package publishing and deployment - Authentication and authorization concepts |
C2090-645 Exam FAQs for 2026 Candidates
Which certification does the C2090-645 exam lead to?
The C2090-645 exam is the official IBM exam behind the IBM Certified Author - Cognos BI certification, validating the skills measured by the IBM Cognos 10 BI Multidimensional Author credential. It sits at the Professional level of the IBM certification program. It also connects to IBM Cognos BI Report Author, IBM Cognos BI Modeler, IBM Cognos Analytics certifications, so the knowledge you build here carries over to those tracks as well.
Are there any prerequisites for the C2090-645 exam?
Recommended experience with IBM Cognos BI tools and basic data warehousing/OLAP concepts. No strict formal prerequisite is publicly enforced. Requirements can change when IBM revises its certification program, so confirm the current eligibility rules on the official exam page before you register.
How do I register for the C2090-645 exam?
You can book the IBM Cognos 10 BI Multidimensional Author exam through the official registration channels below:
As for delivery, the exam is offered in the following format: Online proctored or authorized testing center. Choose the option that suits you best when you book your seat.
What official training is recommended for the C2090-645 exam?
IBM recommends the following training resources for the IBM Cognos 10 BI Multidimensional Author exam:
Official courses build the foundation; the 57 practice questions from Getcertkey then show you how that knowledge is examined, so the two work best together.
Can I try the C2090-645 practice questions before I buy?
Yes. Getcertkey provides a free C2090-645 PDF demo so you can review the question style and answer quality before purchasing. Every purchase also includes 365 days of free updates — if IBM revises the exam during that period, the updated material reaches you at no cost. Once the free-update year ends, you can extend your update service at a 50% discount.
What if I fail the C2090-645 exam, and how is my order delivered?
Every IBM Cognos 10 BI Multidimensional Author purchase on Getcertkey is covered by a 100% money-back guarantee with clear conditions: if you take the corresponding exam within 60 days of your purchase and do not pass, you can claim a full refund by submitting a scanned copy of your exam enrollment slip and your official score report as a PDF within two days of the exam date; claims are processed within seven days of submission. The guarantee does not apply to exams taken within three days of purchase, to material that was downloaded but never used in an exam attempt, or to free products and expired orders, and the candidate name must match the payer name. If you would rather not take a refund, you can instead exchange your purchase for two free exam preparation products of equal value and keep the update service on your original product.
Delivery is instant: your download is sent to your email within one minute of payment, with no limit on how many computers you may install the material on. If nothing arrives within two hours, check your spam folder and contact customer service for help.
What topics are covered in the C2090-645 exam?
The IBM Cognos 10 BI Multidimensional Author exam blueprint is organized into 7 domains. The first three are:
- Report Authoring and Analysis
- IBM Cognos BI Architecture and Components
- Framework Manager Modeling
For the complete domain-by-domain breakdown, scroll up to the full exam topics outline above and use it to plan how you distribute your study time.
IBM Cognos 10 BI Multidimensional Author Sample Questions:
Question 1
To create a report from the data source shown, what entities will the report author use?
A. Members
B. Values
C. MUNs
D. Attributes
Question 2
The report author wants to create a report to compare the sales of product types for special sales promotions in 2005 and 2006, but the report will exclude regular sales. Which style of authoring and which function will the report author use to create this report from a cube data source?
A. Relational authoring style, filter function
B. Dimensional authoring style, filter function
C. Relational authoring style, except function
D. Dimensional authoring style, except function
Question 3
The report author creates a source report that contains values from "Products" on which the report consumer will drill through for details. The report author has created a target report which expects a member from the source. Is this a supported drill-through combination?
A. No, this member-to-value drill-through is not a supported combination.
B. Yes, this member-to-value drill-through is a supported combination.
C. Yes, this value-to-member drill-through is a supported combination.
D. No, this value-to-member drill-through is not a supported combination.
Question 4
The "Sales" and "Inventory" data stores each have "Products" and "Time" dimensions. For drill-through between the data stores on the "Products" and "Time" dimensions to work, which items in the structures must be identical in the data stores?
A. Role value, internal keys
B. Hierarchy names, member values
C. Level order, level names
D. Hierarchy names, snowflake schema
Question 5
A report author uses an OLAP cube to create a crosstab with Revenue as a measure, the Product line level in the rows, and the year members (2004-2007) in the columns. How can the report author efficiently determine the difference in revenue between the years 2005 and 2006?
A. Determine MUNs for the years 2005 and 2006, and then create an expression using the MUNs.
B. Ask the modeler to create a calculated category in Transformer and then use it directly.
C. Create a new column as a query calculation, and create the expression [2006]-[2005].
D. Create a set of the 2005 and 2006 members and aggregate it.
Solutions:
| Question 1 Answer: B | Question 2 Answer: D | Question 3 Answer: D | Question 4 Answer: C | Question 5 Answer: C |
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