olap | 睿思BI-OLAP开源多维分析系统 | Business library

 by   ruisibi JavaScript Version: Current License: Apache-2.0

kandi X-RAY | olap Summary

kandi X-RAY | olap Summary

olap is a JavaScript library typically used in Web Site, Business applications. olap has no bugs, it has a Permissive License and it has low support. However olap has 1 vulnerabilities. You can download it from GitHub.

睿思BI-OLAP开源多维分析系统
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            kandi-support Support

              olap has a low active ecosystem.
              It has 102 star(s) with 73 fork(s). There are 12 watchers for this library.
              OutlinedDot
              It had no major release in the last 6 months.
              There are 0 open issues and 2 have been closed. On average issues are closed in 22 days. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of olap is current.

            kandi-Quality Quality

              olap has 0 bugs and 0 code smells.

            kandi-Security Security

              olap has 1 vulnerability issues reported (0 critical, 1 high, 0 medium, 0 low).
              olap code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              olap is licensed under the Apache-2.0 License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              olap releases are not available. You will need to build from source code and install.
              olap saves you 24557 person hours of effort in developing the same functionality from scratch.
              It has 47912 lines of code, 392 functions and 309 files.
              It has high code complexity. Code complexity directly impacts maintainability of the code.

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            Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of olap
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            olap Key Features

            No Key Features are available at this moment for olap.

            olap Examples and Code Snippets

            No Code Snippets are available at this moment for olap.

            Community Discussions

            QUESTION

            Bind 2 different OLAP Cube results
            Asked 2021-Jun-11 at 16:08

            is there a way to bind 2 OLAP Cubes with the same structure into one? As for now I have big Datasets for past 10 years (20-50 milion records each cube) that is every day processed. For optimalization purposes I want to separate it. For exaple the data for past 8 years will be processed once and the new data will process daily. For it it would need 2 Cubes but can I merge results from it?

            Edit. Im reading on blogs and forums about partitioning the data but how does it really work? Would I be able to process only the new data so I dont need to process all 30+ mil rows?

            ...

            ANSWER

            Answered 2021-Jun-11 at 16:08

            Processing these partitions is done separately from the cube design. One way to deal with this is by scripting out the commands and running them in a sql agent job:

            1- Connect to the ssas instance, browse to the dimensions folder and hit F7 to open the object explorer details window.
            2- Highlight all the dimensions, right click and select process

            3- In the dialogue, select the script button and choose script action to new query window or script action to clipboard and save it someplace. This will be the xmla command to update all the dimensions.

            4- Next, navigate to the measure group in which you made the partitions and select the last partition in the group which you want to refresh daily. Right click, select process and use the script option to create an xmla command

            5- Next, select the measure group folder and select all the measure groups in the object explorer detail window, except for the partitioned group. Right click, select process and script out the command as in step 3.

            6- Now that you have all the commands, add them to a SQL Agent job with 3 xmla command steps, one to process the dimensions and the next two to process the measure groups and most recent partition. Note that if this is running under the sql agent service account, that account will need to have permissions to process the cube.

            tip add another job to run on the weekends which does a process full over the whole cube. This is a little cleanup step to make sure everything stays in sync.

            Source https://stackoverflow.com/questions/67919938

            QUESTION

            c++: AWS S3 Object Lambda
            Asked 2021-Jun-08 at 13:03

            AWS recently introduced S3 Object Lambda, however looking at the online documentation:

            I can only find example for Java, Python and NodeJS.

            Is there an example out there for c++ that I missed ? In particular I fail to understand what is the equivalent in c++ for getObjectContext (python/nodejs) / S3ObjectLambdaEvent (java) ? How should I retrieve outputRoute, outputToken, inputS3Url ? The integration test does not make it particularly clear either:

            ...

            ANSWER

            Answered 2021-May-25 at 18:25

            S3 Object Lambda is using the AWS Lambda service. AWS Lambda does only support the following runtimes "natively":

            • Go
            • .NET Core
            • Ruby
            • Java
            • Python
            • NodeJS

            C++ is support through "custom" runtimes or through Docker containers. Usually, the AWS documentation only covers the "natively" supported runtimes and even then not all (as you noticed). Mostly they have examples for the most popular ones.

            So what you need to look for are C++ Lambda examples, examples using the C++ AWS SDK and reference documentation.

            Using the reference documentation and the Java/Python/NodeJS examples, it should be easy to write a C++ version.

            For example:

            1. Introducing the C++ Lambda Runtime (Blog Post)
            2. C++ AWS SDK Page
            3. API Reference for WriteGetObjectResponseRequest

            Source https://stackoverflow.com/questions/67691154

            QUESTION

            Really slow DISCOVER_CSDL_METADATA in SQL Server Profiler
            Asked 2021-May-12 at 09:59

            Our setup is SQL Server + SSAS + multidimensional OLAP + PowerBI on top of it.

            Recent issue we noticed is that when user loads PowerBI report, from time to time forementioned event occurs. This leads to really long waiting time until the report loads (event takes up to 45-60 seconds).

            Our cube has ~20 dimensions and ~50 measures, 2-3 million rows in 3 partitions, MOLAP storage.

            What can we do about it? How can we debug it? We don't have SSAS experts on board and googling this event didn't help much. Where can we search for reasons of such behavior?

            ...

            ANSWER

            Answered 2021-May-12 at 09:59

            It turns out that in our case it was probably caused by cache being dropped each time the cube was processed.

            Our solution would be creating SSIS Package that would run certain DMV queries to populate cache every time we process our cubes, so end-users would be able to use the cache instead of generating it themself.

            Source https://stackoverflow.com/questions/67418695

            QUESTION

            Star snd snowflake schema in OLAP systems
            Asked 2021-May-11 at 17:57

            I was of the impression that in OLAP , we try to store data in a denormalized fashion to reduce the number of joins and make query processing faster. Normalization that avoids data redundancy was more for OLTP systems.
            But then again, 2 of the common modelling approaches (star and snowflake schema) are essentially normalized schemas.
            Can you help me connect the dots?

            ...

            ANSWER

            Answered 2021-May-11 at 17:47

            When people use the term "normalised" they normally mean something that is in, or at least close to, 3rd normal form (3NF).

            Unless you mean something significantly different by the term normalised then neither Star or Snowflake schemas are normalised. Why do you think they are normalised?

            Source https://stackoverflow.com/questions/67488372

            QUESTION

            What do Transaction means in OLTP?
            Asked 2021-Apr-30 at 09:21

            My question might be little native. What is the meaning of transaction in OLTP? Is it same as ACID Transaction or there is something else?

            NoSql database like cassandra doesn't follow ACID properties. They follow CAP. In which category Cassandra falls? Is it OLAP or OLTP?

            ...

            ANSWER

            Answered 2021-Apr-30 at 08:16

            In those context, they both mean database transaction.

            OLTP emphasizes that it's a transactional system and usually came with better transaction supports such as ACID.

            Source https://stackoverflow.com/questions/67329687

            QUESTION

            Is it more effective to use OLAP for OBIEE in terms of performance?
            Asked 2021-Apr-20 at 09:31

            We have been using simple date warehouse for banking, that loads bulk data every night while the system is off, and connected to Obiee via Administration tool. It is working fine till now.

            Recently, we have been discussing about moving to OLAP for our Data Warehouse since by definition it seems OLAP is most suitable for data retrieving even though it requeires one more step to develop dimensions and measure facts in Analytics Workspace. And some sources say that queiries will take more time to return results when OLAP is used. If there are some developers who switched from usual dwh development to implementing OLAP in it, do you recommend it?

            ...

            ANSWER

            Answered 2021-Apr-20 at 09:31

            To put it simply: If the data source configuration and model are rubbish, then it doesn't matter at all if you go for a dimensional model. I've seen flat-table-based models which performed like crazy and "OLAP models" which were slow beyond believe. Nothing is a fix-it-all solution. Never believe that slapping a new badge on something will solve a problem. You need to think about it and architect properly and accordingly.

            Source https://stackoverflow.com/questions/67174587

            QUESTION

            How do I convert data in dictionary format from a url into a pandas dataframe?
            Asked 2021-Apr-17 at 12:48

            This is the address that contains the data I am looking to convert into a dataframe: https://oec.world/olap-proxy/data?cube=trade_i_baci_a_92&Exporter+Country=nausa&HS4=42204&Year=2016&drilldowns=Importer+Country&locale=en&measures=Trade+Value&parents=true&sparse=false&properties=Importer+Country+ISO+3&q=Trade%20Value

            I want the headers to be Continent ID, Continent, Country ID, Country and so on. How do i go about it?

            ...

            ANSWER

            Answered 2021-Apr-16 at 11:43

            requests and pandas json_normalize do the trick:

            Source https://stackoverflow.com/questions/67122118

            QUESTION

            Gremlin OLAP traversal query error regarding local star-graph
            Asked 2021-Apr-08 at 14:40

            I'm trying to execute an OLAP traversal on a query that needs to check if a vertex has a neighbour of certain type. i keep getting

            Local traversals may not traverse past the local star-graph on GraphComputer

            my query looks something like:

            ...

            ANSWER

            Answered 2021-Apr-08 at 14:40

            That is limitation of TinkerPop OLAP GraphComputer. It operate on 'star-graph' objects. The vertex and connected edges only. It uses message passing engine inside. So you have to rewrite you query.

            Option 1: start from label2 and go t label1. This should return the same result

            Source https://stackoverflow.com/questions/66336446

            QUESTION

            Best practice to store diverse time intervals in OLAP cube
            Asked 2021-Apr-07 at 16:38

            My task is to make "OLAP cube", aggregated by time intervals

            So, it is supposed, that facts table will store aggregates:

            1. for each day
            2. for each month based on its days records
            3. for each year based on its months records

            And it will look like this:

            ...

            ANSWER

            Answered 2021-Apr-07 at 16:38

            It is not good idea, in most cases, to mix facts of differing granularity in a single fact table. If you really need to store daily, monthly and yearly data, consider more than one fact table.

            You can also have a dimension table with one row per day and various attributes that facilitate aggregation, such as fiscal year.

            Source https://stackoverflow.com/questions/66989626

            QUESTION

            Filter OLAP pivot table with VBA
            Asked 2021-Apr-05 at 21:42

            I have access to our database through an OLAP pivottable. I often want to filter based on multiple client numbers (which are not continuous). The client list is so long, however, that trying to scroll through and manually select clients is out of the question. I am hoping to solve the issue by adding a slicer and using a macro to select visible slicer items (though I'm open to other ideas). I'm hoping to have a worksheet where I can add a list of client numbers I would like to filter on which the macro applies to the slicer when run.

            When I recorded a macro, it produced the following code:

            ...

            ANSWER

            Answered 2021-Apr-05 at 21:42

            The Array function takes a list of values and turns them into an array. Using Array(s_array) gives you a one-element array where that one element is itself an array that has (s_count - 1) elements - i.e. from zero to (scount - 2). In other words, you have created a two-dimensional array with bounds (0 To 0, 0 To s_count - 2).

            To solve this, just use s_array directly and leave out the Array(...) part:

            wb.SlicerCaches("Slicer_Client_ID").VisibleSlicerItemsList = s_array

            Note: answer assumes that the default Option Base 0 is in effect and that arrays start with element 0

            Source https://stackoverflow.com/questions/66959957

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network

            Vulnerabilities

            Unspecified vulnerability in the Oracle OLAP component in Oracle Database Server 11.2.0.4, 12.1.0.1, and 12.1.0.2 allows local users to affect confidentiality, integrity, and availability via unspecified vectors.

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            You can download it from GitHub.

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