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Start a new thread here 1151170 Related Discussions joining gl_je_lines to gl_je_headers in discoverer report Help me to getting Discoverer Reports Discoverer Issue - Attempt to open workbook failed Discoverer user Now, if you enable fan trap detection in Discoverer and if you use Discoverer to aggregate the data points, Discoverer will never return incorrect results. The report runs fine when the fan trap error check feature is turned off. You cannot use this option if you have incompatible objects.

Your Polls Get Trained! from A and C or A and B or A,B and C? Create a one to one join between the original table and the alias table.3. This Join Path (or Query Path) problem return too many rows.

Getting fan trap detected error in Discoverer KSRaju asked Aug 30, 2006 | Replies (4) Hi Friends, I'm working on Discoverer 10g. Specialisation This is the process of maximising the differences between members of an entity by identifying their distinguishing characteristics. Figure : Chasm Trap A single branch is allocated many staff who oversee the management of properties for rent. We require some additional semantic modelling concepts: Specialisation Generalisation Categorisation Aggregation First we need some new entity constructs.

The fan trap is resolved by restructuring the original ER model to represent the correct association. Search: Home Recent Posts All Posts! Some of the towns have a garage where busses are kept and each of the busses are identified by the registration number and can carry different numbers of passengers, since the and access GeekInterview anytime...

Discoverer rewrites the query using inline views, one for each master-detail aggregation, and then combines the results of the outer query. Please contact me if you there is any issue with the download. Advanced Join Property Advance join property in universe is present , when you click a join between any two tables and click on Advance button. This could waste space and you might want to make some attributes mandatory for some types of staff but other staff would not need these attributes at all.

The fanning out effect of “one-to-many” joins can cause incorrect results to be returned when a query includes objects based on both tables. In my case its very huge data, so not sure Top This thread has been closed due to inactivity. Skip to Content Open navigation Account Settings Notifications Followed Activities Logout Search Your browser does not support JavaScript. Related Open Questions Trap db2 file errors Navigation trap What is the use gui playback opt --trap How to use the trap utility option in gui playback in the rational robot

The Chasm trap occurs when ... Hope this info helps... 6 Likes 6 View this answer in context 9 replies Share & Follow Privacy Terms of Use Legal Disclosure Copyright Trademark Sitemap Newsletter Members Search Help Register Every query that Discoverer generates is interrogated for potential fan traps. If I select the items from third folder I'm getting a message like 'fan trap was detected unable to add the item to work book' Can anyone please help me to

Related Filed under Discoverer Tagged with Disable fan trap detection, Discoverer, Example of Fan Trap, Fan Trap in Discoverer, How Discoverer handles fan trap?, How to enable fan trap in discoverer? For example: A = Dimension - Customer B = Fact - Order Header C = Fact - Order Lines You will get incorrect data for your facts from B whenever you Aggregate Awareness in Universe Lets see what is this aggregate awareness functionality and how it is useful in universe. Stage - Routes are made up of stages Garage - Garage houses buses, and need to know where they are.

All rights reserved. Relationships A bus is allocated to a route and a route may have several buses. Mohit Baid replied Oct 9, 2007 Hi Yogini, After setting the option, will we be getting the same correct output. This is the identification of a generalised superclass from the original subclasses.

Bus-route (m:1) is serviced by A route comprises of one or more stages. Check 'Disable fan-trap detection' checkbox. For eg. Example of Fan Trap: Consider an example fan trap schema that includes a master folder (ACCOUNT) and two detail folders (SALES and BUDGET), as shown below: Now let’s say we need

Department >---- Site ------< Staff A single site contains many departments and employs many staff. So, if he creates a crosstab workbook with the following layout :The aggregation will be made onDepartment.Item (Because it is Page Item and rollup at page item level)Customers.Item (Because it is Figure shows a simple fan trap schemaAlthough this construction is relationally correct, you are likely to return incorrect results if you use a straightforward SQL statement to aggregate data points. Lucas Top Best Answer 0 Mark this reply as the best answer?(Choose carefully, this can't be changed) Yes | No Saving...

The system returned: (22) Invalid argument The remote host or network may be down. Business Objects Monday, 19 March 2012 Fan Trap Fan Trap inBusiness Objects This is also a join path problem created in universe when below scenarios are met: Consider table A, B Indeed, I joined Oracle Support in the 1998 working in the Oracle Forms & Designer competency. what is chasm trap?

Send to Email Address Your Name Your Email Address Cancel Post was not sent - check your email addresses! Now table Sales contain 4000 as the amount and sales detail captures the breakup of that amount i.e.(car=3000 and accessories = 1000). Figure : Fan Trap A single site contains many departments and employs many staff. The purpose of introducing superclasses and subclasses is to avoid describing types of staff with possibly different attributes within a single entity.

My problem has been resolved. You force the SQL generation engine in Reporter to generate separate SQL queries for each measure that appears in the Query panel. Basically we merge ob... This trap can also be created when we are having only two tables say B and C with "One to Many" relationship, where we are using dimension and measure(which is aggregation

Thanks in advance. In some circumstances, Discoverer will detect a query that involves an unresolvable fan trap schema, as follows: If the detail folders use different keys from the master for the join If Previous Page Next Page Up One Level Database Notes Online Notes Reference Pages Tutorial Activities Online SQL Online Quiz Discussion Forum Future Stuff Online Relational Algebra News Ask Question Propose Category Really helpfull cheerskeep posting such concepts with such easy examplesReplyDeleteAnonymous18 June 2013 at 18:30Good Great explanation thanks ReplyDeleteAnonymous5 September 2013 at 08:57Hi Gaurav,very nice explanation,but I have one quick question.As we

How do you resolve that loop? Categorisation Left as an exercise to research. I have received recently a claim from a customer regarding the aggregation behaviour of his workbook. Let's say there is a set of Region and there Revenue like below: Region Revenue East Japan 1,012,727 Bav...

IMPOSSIBLE IS NOTHING. Using Aliases and Context. By default, fan trap detection is always enabled for you. Your cache administrator is webmaster.

Discoverer rewrites the query using inline views, one for each master-detail aggregation, and then combines the results of the outer query.Now, back to the customer issue, I verified the following schema