Hyperion Essbase 5 Interview Questions And Answers
Question: 1. What Are The Two Storage Options Available In Essbase And What Are The Differences?
Answer:
ASO (Aggregate Storage Option) Used for
If we’ve got big variety of dimensions (generally greater than 10).
Most of the dimensions are sparse.
We can’t write again in ASO. I heard lately that ASO will even have the write again capability.
BSO (Block Storage Option)
Dimensions are much less and dense (endorsed values for no of dim are among four and 8) .
We can write returned subsequently tons proper for making plans applications.Financial programs are typically dense structures and regular analytical cubes are sparse. Here we also want to understand what those dense and sparse contributors are. When the intersections or cells of dimensions mainly incorporate a cost it’s miles dense.
Say for instance we’ve got dimensions duration(Month or sector) and place and we are calculation the sales quantity. Generally most areas(international locations, cities) could have a few sales fee for a selected month or region. Hence we will say that our length dimensions could be dense. But now as opposed to duration, don’t forget every other dimension product. Now there are a few merchandise which might be sold in only a few particular areas subsequently for them there will be no values in other areas or can have very low percent of information values for this reason the structure turns into sparse.
Question: 2. Can We Build Dimensions Directly From Data Sources Without Using Rule Files.
Answer:
No. We can not construct dimensions immediately from records sources without the use of rule documents.
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Question: three. When Do We Generally Use Build Rules Files?
Answer:
To automate the procedure of making dimensions with lots of individuals.
Question: 4. What Are The Three Primary Build Methods For Building Dimensions?
Answer:
Generation references.
Degree references.
ParentChild references.
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Question: 5. In What Case We Can Define Generation 1 To A Field In Generation Build Method.
Answer:
We cannot define that as Generation 1 is not legitimate.
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Question: 6. Suppose We Have Assigned Generation 2 And Generation 4 As Of Now And Think Of Adding Generation three Later Some Time. Can We Build The Dimension.
Answer:
No. If gen 2 and gen 4 exists, we ought to assign gen three.
Question: 7. Can We Create More Than 2 Dimensions Using Only One Build Rule File.
Answer:
Yes, we can do this but it’s miles recommended to apply separate rule record for every size.
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Question: 8. What Is Uda( User Defined Attributes). How Are They Different Than Aliases.
Answer:
UDA represents the elegance of the contributors. Aliases are simply any other names of the members. Each are one of a kind and has exclusive usage.
Question: 9. Can We Query A Member For Its Uda In A Calculation Script.
Answer:
Yes. You can query a member for its UDA in a calculation script.
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Question: 10. How Does Uda’s Impact Database Size?
Answer:
Absolutely no effect as UDA’s does not require extra storage space.
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Question: 11. What Is The Difference Between Uda’s And Attribute Dimensions?
Answer:
Attribute dimensions provides greater flexibility than UDA’s. Attribute calculations dimensions which consist of 5 individuals with the default names sum, remember, min, max and avg are routinely created for the characteristic dimensions and are calculated dynamically.
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Question: 12. How Does Attribute Dimensions And Uda’s Impact Batch Calculation Performance?
Answer:
UDA’s No Impact as they do no longer carry out any inherent calculations.Attribute dim No Impact as they perform handiest dynamic calculations.
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Question: thirteen. How Can We Display Uda’s In Reports? How Do They Impact Report Report Performance.
Answer:
UDA’s values are in no way displayed within the reports and subsequently do no longer effect document overall performance.
Question: 14. How Does Attribute Dim Impact Report Performance?
Answer:
They noticeably effect the file overall performance because the attributes are calculated dynamically while referenced within the report. For very huge range of att dim displayed within the report, the performance could appreciably lessen.
Question: 15. While Loading The Data, You Have Applied Both The Selection Criteria As Well As Rejection Criteria To A Same Record.What Will Be The Outcome.
Answer:
The document may be rejected.
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Question: sixteen. How Is Data Stored In The Essbase Database?
Answer:
Essbase is an record based database wherein the statistics is saved in PAG files of 2 GB every and grows sequentially.
Question: 17. Can We Have Multiple Databases In One Single Application?
Answer:
Yes. But most effective one database per utility is usually recommended.
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Question: 18. Can We Have One Aso Database And One Bso Database In One Single Application. If Yes, How And If No, Why.
Answer:
No. Because we outline ASO or BSO alternative whilst growing the application and not database. Hence if the utility is ASO, the databases it consists of may be that type handiest.
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Question: 19. What Are The File Extensions For An Outline, Rule File And A Calc Script.
Answer:
.OTL, .RUL and .CSC.
Question: 20. What Is The Role Of Provider Services.
Answer:
To speak among Essbase and Microsoft office tools.
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Question: 21. What Is An Alternative To Create Meta Outline, Rule File And Load Data.
Answer:
Integration services and in version eleven, we have Essbase studio.
Question: 22. Can We Start And Stop An Application Individually. How Can This Be Used To Increase Performance.
Answer:
Yes. We can control our server assets with the aid of beginning handiest the applications which get hold of heavy person visitors. When an application is began, all associated databases are added to the memory.
Question: 23. We Have Created An Application As Unicode Mode. Can We Change It Later To Nonunicode Mode.
Answer:
No.We cannot exchange to nonunicode mode.
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Question: 24. How Can I Migrate An Application From My Test Environment To The Production Environment?
Answer:
Hyperion Administrative offerings console offers a migration software to do that but most effective the utility, database gadgets are migrated and no information is transferred.
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Question: 25. A Customer Wants To Run Two Instances Of An Essbase Server On A Same Machine To Have Both Test Env And Development Env On The Same Server. Can He Do That?
Answer:
Yes. We may have more than one instances of an Essbase server on a unmarried gadget and there can be different sets of windows offerings for these kinds of times.
Question: 26. Suppose I Have A Dimension A With Members B And C And I Do Not Want B And C To Roll Up To A. How Can I Do This.
Answer:
Using (~) exclude from consolidation operator.
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Question: 27. What Does Never Consolidate Operator (^) Do?
Answer:
It prevents members from being consolidate throughout any measurement.
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Question: 28. What Is Hybrid Analysis?
Answer:
Lower stage members and related information remains in relational database where as top stage participants and related records resides in Essbase database.
Question: 29. Why Topdown Calculation Less Efficient Than A Bottomup Calculation?Being Less Efficient, Why Do We Use Them.
Answer:
In the technique it calculates greater blocks than is vital. Sometimes it is important to perform topdown calculation to get the ideal calculation consequences.
Question: 30. On What Basis You Will Decide To Invoke A Serial Or Parellel Calculation Method.
Answer:
If we have a unmarried processor, we can use serial calculation however if we have more than one processors we are able to damage the undertaking into threads and cause them to run on one-of-a-kind processors.
Question: 31. What Is Block Locking System?
Answer:
Analytic services (or Essbase Services) locks the block and all different blocks which contain the Childs of that block while calculating this block is block locking device.
Question: 32. What Are The Types Of Partitioning Options Available In Essbase?
Answer:
Replicated partition.
Transparent partition
Linked partition.
Question: 33. Dynamic Calc Decreases The Retrieval Time And Increases Batch Database Calculation Time. How True Is The Statement?
Answer:
The declaration must be just contrary. As dynamic calc members are calculated when asked, the retrieval time should growth.
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Question: 34. Can We Have Multiple Meta Outlines Based On One Olap Model In Integration Services?
Answer:
Yes.We’ve got multiple meta outlines based totally on one OLAP version in Integration offerings.
Question: 35. What Are Lro’s( Linked Reporting Objects)?
Answer:
They are unique items like files, cellular notes or URL’s related to specific records cells of Essbase database. You can link a couple of items to a single records mobile.These linked items are saved in the server. These LRO’s can be exported or imported with the database for backup and migration sports.
Question: 36. What Is Custom Based Macro?
Answer:
Essbase macros that we write with Essbase calculator capabilities and special macro features. Custom-defined macros use an inner Essbase macro language that enables you to combine calculation function and perform on multiple input parameters.
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Question: 37. What Do You Mean By Dirty Block?
Answer:
A statistics block containing cells that have been modified for the reason that closing calculation. Upper level blocks are marked as dirty if their infant blocks are dirty (that is, have been updated)
Question: 38. How Does Uda’s Impact Database Size?
Answer:
Absolutely no impact as UDA’s do not require extra storage space.
Question: 39. What Does Never Consolidate Operator(^) Do?
Answer:
It prevents participants from being consolidate throughout any size.
Question: 40. Why Are Filters Used?
Answer:
If you need to supply get right of entry to to all dimensions then you definitely wouldn’t use a clear out. Just supply read get entry to for the database to the consumer and/or institution. The best reason you would use a filter out is in case you desired to restriction get entry to.
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Question: forty one. Can We Have Multiple Metaoutlines Based On One Olap Model In Integration Services?
Answer:
Yes
Question: forty two. What Are Lro’s( Linked Reporting Objects)?
Answer:
They are precise objects like files, cell notes or URL’s associated with unique information cells of Essbase database. You can hyperlink multiple items to a single records mobile. These related objects are saved within the server. These LRO’s can be exported or imported with the database for backup and migration sports.
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