How to implement proactive caching in SQL Server Analysis Services (SSAs) 2005Written by: Ray Barley
ProblemWe have chosen molap storage in order to maximize the query performance of our cubes. since we have a number of cubes we are now focused on coming up with a strategy for keeping the cubes up to date as the data in our warehouse changes frequently. can you give us the details on how we go about implementing the proactive caching feature in SQL S
Analysis Management Objects (AMO) is the object model library of SQL Server SSAS. It allows you to conveniently access and control Objects in SSAS, including Cube, DataSource, performanceview, Partition, Measure, dimension, Assembly, Role, and DataMining objects. To use it, you must find the SSAS installation path \ Mi
Analysis Management Objects (AMO) is the object Model Library of SQL Server SSAS, which allows easy access to and control over objects in SSAS, including Cube,datasource, DataSourceView, Partition, Measure, Dimension, Assembly, role, and DataMining objects. To use it, you must locate the SSAS installation path Microsof
The SSAs dimension attribute (Attribute) has the following three properties: KeyColumn, NameColumn, ValueColumn, as shown in the date dimension of the AW setting for these three column properties, And we use the wizard to generate the dimension by default only KeyColumn settings, if not manually set NameColumn, its value is equal to KeyColumn, if not manually set ValueColumn, its value is the default equals NameColumn. In general, there is no problem
Roles
Before discussing how the newly created role affects the xmla code of the oalkaline database, let's briefly describe the role in SSAs. The following is a role editing interface. Although it has seven option configuration interfaces (not discussed about the mining structure Interface), all of them can be classified into three categories:
1.Read defined Permissions
A person with this permission can connect to the OLAP database, and then it wi
Introduction to RolesBefore discussing how the newly created role affects the XMLA code of the Oalp database, we start with a brief description of role in SSAS. Here is one of the character editing interfaces, although it has 7 options to configure the interface (not to discuss the mining structure interface), but in fact all can be categorized into 3 categories:1. Read the defined PermissionsSomeone with that permission can connect to the OLAP databa
Today, another friend has encountered slow processing speed of the SSAS database, mainly because the data aggregation volume is indeed large and it takes more than thirty minutes to process each time, is there any way to reduce the processing time?
I have been engaged in Bi for seven years, so similar questions can definitely be listed in the top 10 FAQ in the career circle. These problems are often a little complicated. Here we will list some of our
tools to browse the data. Choose cube-Browser:
You only need to drag dim-related dimensions to the corresponding dimension area (where rows and columns are all dimensions), and then drag the Measurement corresponding to measures to the data area to view the data.
A simple multi-dimensional dataset has been built. Here, it is just a matter of sensibility. A careful friend may see that his column and column conversion is very convenient, you only
layer between a physical relational database used as a data source and a proprietary cube and a dimension structure for satisfying user queries. In this way, UDM can be treated as a core part of an OLAP solution. The model also provides rich advanced business intelligence capabilities to provide optimal relational analysis and OLAP analysis, and further enables organizations to leverage unique key performance indicator frameworks (Critical performanc
Generally, SSRS is used to create reports based on relational data sources. This is basically the end of various technical books. Few reports based on SSAs data sources are introduced. As a result of the project's needs, I have come into contact with this content. Here I will introduce how to establish SSAs-based reports in reporting services based on some of my experiences in the project, and how to use pa
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hierarchies is used to organize measures that is contained in a cube.
Cube Objects
Original
A simple Cube object is composed of:basic information, dimensions, and measure groups .
Basic Information includes the name of the cube, the default measure of the cube
1. Local multi-dimensional dataset
The local multi-dimensional dataset and local mining model allow you to analyze the workstation when the client workstation is disconnected from the network. When interacting with a local cube, admod. NET and analysis management objects (AMO) will also load the local cube engine. Only one process can access the local cube file,
Named sets in SSAs are frequently used in projects. Common functions such as topcount, filter, and exists can be set as static namespaces, some do not work. For example, if topcount is set to static set, it doesn't make much sense. It is related to the performance problem of accessing SSAs in Excel today, in the support phase, it took nearly 20 seconds for a project to access
Excel, click Data, from other analytical data sources, input access to the Http://192.168.156.139/olap/msmdpump.dll connection can be, specific asSelect the corresponding multidimensional database and the corresponding cube toAdditional instructions: If the XML parsing fails at the 1th and 9th columns when using the EXCE connection: disables the DTD error. In the application pool, select the OLAP application pool that you created earlier, click Advan
fact data table rather than a dimension table. Useful Dimension Data is sometimes stored in fact data tables to reduce duplication.
5. Computing
Finally, I am very interested in this topic. It should be one of the core operations of the data warehouse. Computing is a multidimensional expression (MDX)Expressions or scriptsDefines the computing Member, nameset, or range allocation in a cube in SSAs. In my u
1. create a data source (required) and set the connection to the Data Warehouse that may be used in the project. Generally, the Data Warehouse is configured with identity simulation. If the warehouse and SSAS are a server, you can directly use the service account. Otherwise, you can specify a specific user name and password. 2. create a data source view (required) which includes some dimension tables and
1. create a data source (required) and set the
Aggregate functions at the time of measurement design in a multidimensional dataset (additive _ semi-additive and non-additive)
In the SSAS series-Implementing the first cube as well as the role playing dimension, measure formatting and the creation of calculated members create a cube from existing dimensions and fact data, while interpreting the role-playing Di
Tags: show str cube src dir serve http location check boxThere are many folder properties in the properties in SQL Server Analysis service that determine where the cube file data resides, as shown in the click Properties on the SSAS management interface server:Select General, we can see there are many paths in the property box, such as DataDir is to store the
Original: SSAS Series-"05" Multidimensional data (programming architecture)1. What is AMO?Translation: Amo is a complete collection of management classes in SSAS, which we can find in "\100\sdk\assemblies\analysisservices.dll" under the Microsoft.analysisservices namespace. With Amo we can delete and modify cube, dimensions, Mining structure,analysis Service Data
Tags: style blog http OS Io strong data Dimension optimization In the process of SSAs development and design, dimension optimization is very important because it plays a very important role in the process of SSAs analysis service performance optimization. Generally, the first step to optimize the performance of a cube is to view the dimension and observe the de
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