By IBM Redbooks
Read Online or Download DB2 OLAP Server: theory and practices PDF
Similar system administration books
Multimediale Client-Server-Anwendungen (insbesondere sog. wealthy web Applikationen) entwickeln sich rasant. Die Gründe hierfür sind steigende Bandbreiten im web, ausgereifte Kompressionstechnologien sowie leistungsstarke Endgeräte. Die Anwendungen sind mittlerweile so attraktiv, dass diese mit dem klassischen Unterhaltungsmedium Fernsehen konkurrieren können.
Apache is way and away the main normal internet server platform on the earth. this flexible server runs greater than 1/2 the world's present websites. Apache is either unfastened and rock-solid, working greater than 21 million sites starting from large e-commerce operations to company intranets and smaller pastime websites.
Administer and configure the GlassFish v2 software server Get GlassFish put in and configured prepared to be used combine GlassFish with renowned Open resource items reminiscent of Open MQ, Open DS, and Apache lively MQ, and get them operating jointly in a loosely-coupled demeanour Configure source varieties like JDBC, Java Connector structure (JCA), JavaMail periods, and customized JNDI supported in GlassFish to simplify source entry and integration safe, computer screen, troubleshoot, and song your program server example intimately to construct a strong creation setting to your Java EE platforms, you would like an excellent software server, and the talents to regulate it.
Additional resources for DB2 OLAP Server: theory and practices
It is self-evident to those experienced using multidimensional databases that most intersections will not contain data. This reflects the fact of the inherent sparseness of all business datasets (see Figure 11). Chapter 4. Tuning, good design practices, and useful tips 45 Dimension Members ================================== 172 21 27 Measures Time Mat Structure 32 Product 209 O rganizations 32765 M atrix Size = (172 * 21 * 27 * 32 * 209 * 32765) intersections 21,370,660,375,680 intersection points!
Modeling involves the creation of a prototype outline that models the dimensionality of the user requirements. This outline should be kept to as few dimensions and members as possible but must adequately reflect the dimensionality and the depth within the dimensions being communicated by the user. 34 DB2 OLAP Server - Theory and Practices Next the database will be populated with test data. Once test data is available, use a client access tool such as the spreadsheet add-in and work with the user to ensure that the model will provide the reporting and analysis information required.
Recall that relational storage systems were designed to store only data generated by the business. For example, the idea of storing the fact that no picnic baskets were sold in the Yukon in January is absurd to a relational database schema design. In a multidimensional structure, the intersection of “picnic baskets with the Yukon with January” exists by declaration. In the final analysis the DB2 OLAP storage structures were specifically designed to enable designers to deal effectively with this inherent sparseness, and the inherent sparseness of DB2 OLAP arrays is managed by tagging dimensions as Sparse or Dense.