star-schema Questions

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What is the exact difference between fact-less fact and fact table ? I have perused couple of articles but they weren't cogent

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An OLAP database consists of data in denormalized form. This means data redundancy and this data redundancy helps retrieve data through less number of joins, hence facilitating faster retrieval. ...
Nemertean asked 25/8, 2013 at 21:40

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Our App / Data We have a Python app with Users in Transactions that have Commissions, Fees, etc., with Contacts that receive EmailMessages, and which Activitys take place on (Documents uploaded, S...
Polythene asked 26/12, 2017 at 20:11

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I'm trying to design a Data Warehouse for a single store of commonly required data ranging from finance systems, project scheduling systems and a myriad of scientific systems. I.e. many different d...
Piperpiperaceous asked 13/6, 2017 at 9:15

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I'm trying to model my data warehouse using a star schema but I have a problem to avoid joins between fact tables. To give a trivial idea of my problem, I want to collect all the events who occur o...
Consueloconsuetude asked 6/3, 2017 at 15:38

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We are looking to access BigQuery through third party sql clients, ex. RazorSql. I came across StarSchema JDBC driver and I could not make it work with Razorsql and on the webpage it says that the ...
Rotary asked 23/12, 2015 at 20:56

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I create jdbc connection for google BigQuery as follwing Class.forName("net.starschema.clouddb.jdbc.BQDriver"); conn = DriverManager.getConnection("jdbc:BQDriver:"projectID"?transformQuery=true&...
Met asked 4/6, 2014 at 14:0

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Given the following star schema tables. fact, two dimensions, two measures. # geog_abb time_date amount value #1: AL 2013-03-26 55.57 9113.3898 #2: CO 2011-06-28 19.25 9846.6468 #3: MI 2012-0...

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Is it common practice in a star schema to prefix table names as a dimension or fact table? Is it also common practice to have column names prefixed with the table name? In my normal OLTP databases...
Hit asked 11/11, 2009 at 16:11

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MS SQL Server I'm making a star schema. I've set the PK's and FK for my tables and am now trying to write a procedure that will drop the constraints, truncate the tables, add the constraints again...
Erdmann asked 9/12, 2014 at 18:33

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This is a bit of an open question but I would really like to hear people opinions. I rarely make use of explicitly declared temporary tables (either table variables or regular #tmp tables) as I be...
Homovec asked 15/1, 2009 at 15:15

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I'm trying to use python's olap framework cubes on a very simple database, but I am having some trouble joining tables. My schema looks like this: Users table ID | name Products table ID | name ...
Forensic asked 5/11, 2012 at 14:9

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Is a Star-Schema design essential to a data warehouse? Or can you do data warehousing with another design pattern?

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We have flat files (CSV) with >200,000,000 rows, which we import into a star schema with 23 dimension tables. The biggest dimension table has 3 million rows. At the moment we run the importing proc...
Incommodity asked 12/4, 2011 at 8:1

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Imagine a table with the following structure on PostgreSQL 9.0: create table raw_fact_table (text varchar(1000)); For the sake of simplification I only mention one text column, in reality it has...
Allred asked 3/1, 2011 at 11:53

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I've read a lot about star-schema's, about fact/deminsion tables, select statements to quickly report data, however the matter of data entry into a star-schema seems aloof to me. How does one "theo...
Onto asked 22/3, 2010 at 23:58

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I have a star-schema architectured database that I want to represent in SQLAlchemy. Now I have the problem on how this can be done in the best possible way. Right now I have a lot of properties wit...
Decentralize asked 16/9, 2009 at 23:21

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I am confused where should I start to design a star schema. for example I have tables in database as follows: Branch(branchNo, bStreetAddress, bCity) LoanManager(empNo, empName, phone, branchNo) ...
Balf asked 2/6, 2009 at 7:27
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