Data warehouse query example

  • How do you query a data warehouse?

    Information is typically accessed using an SQL query.
    The statement responsible for querying the many tables and returning the requested results in a data warehouse environment is the SELECT statement.
    It is an indispensable piece of the data retrieval process..

  • How you can query the data from database?

    How to perform a query in a database

    1. Choose your data.
      2. First, determine the data you want to retrieve or update and consider the method you want to use to perform a query.
    2. Specify data fields.
      3. Once you identify the data you want to work with and decide on a method, consider how to perform the query.
    3. Assign a table

  • What are data warehouse queries?

    In Inmon and Hackathorn's book, they define a query as, "a request for access to information in the data warehouse, with possibly some processing of that data before the results of the query are returned to the end user." They have classified end-user queries using the following taxonomy, see Figure 3..

  • What is query processing in data warehouse?

    Therefore, query processing in data warehouse systems encompasses the definition, the logical and physical optimization, as well as the efficient execution of analytical queries.
    The specific techniques range from classic rewrite rules to rules considering the special structure of a query..

  • What is query tool in data warehouse?

    The Query Tool is an Ingres data management application written in OpenROAD .

    1. GL.
      2. It provides a number of features that enable developers or data analysts to maintain and manipulate data in their local and remote Ingres installations.
      It lets you run ad hoc queries against a database.

  • Therefore, query processing in data warehouse systems encompasses the definition, the logical and physical optimization, as well as the efficient execution of analytical queries.
    The specific techniques range from classic rewrite rules to rules considering the special structure of a query.
May 26, 2010I am writing a simple data warehouse that will allow me to query the table to observe periodic (say weekly) changes in data, as well as changes  How to write SQL to query a data warehouse fact tableExamples of some complex queries for Data WarehousingMore results from stackoverflow.com
May 26, 2010I need to write queries that will allow me to do the following: Return the change in week on week sales_amt for a specified period. For example  How to write SQL to query a data warehouse fact tableExamples of some complex queries for Data WarehousingHow can I speed up queries against huge data warehouse tables Java/.NET Developer moving towards Data WarehouseMore results from stackoverflow.com

How do you communicate with a data warehouse?

To appreciate the wealth of information a data warehouse has to offer, you need to understand how to communicate with it

Information is typically accessed using an SQL query

The statement responsible for querying the many tables and returning the requested results in a data warehouse environment is the SELECT statement

What is data warehousing?

A common way of introducing data warehousing is to refer to the characteristics of a data warehouse as set forth by William Inmon: Data warehouses are designed to help you analyze data

For example, to learn more about your company's sales data, you can build a warehouse that concentrates on sales

Data Warehouse 1.0 - Common Query Examples From Standard Reports

  • Introduction Mifos Data Warehouse 1.0 is a star schema data warehouse. ...
  • Vanilla But Important Reporting on the Star Schema The following query shows how to get a breakdown of repayment transactions for a branch for a quarter. ...
  • Loan Arrears Information Because it's quite complicated, the data warehouse pre-calculates information about each loan that is in arrears. ...
  • Customer and Account Based Reporting ...

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