Introduction to InterSystems DeepSee - InterSystems Documentation

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The DeepSee Model • A detail listing is a view of the source data that underlies a given member displayed in a pivot table. It shows the values of the listing fields for all these source records. 3.2 DeepSee Cubes and BI-enabled Classes In computing, the word cube is often defined in terms of its implementation via “pre-aggregated arrays” or “pre-aggregated tables.” However, in Caché and Ensemble, everything is ultimately stored in globals; this includes all data, all class definitions, all routines — and all DeepSee cubes. So for our purposes, a more generic definition is needed. In a general sense, a cube is a construct that is optimized to support OLAP-type queries (such as the ones shown in the preceding chapter). In InterSystems DeepSee, to build a cube, you enable a set of Caché classes to work with DeepSee; we say that you make the classes BI-enabled (by analogy with “XML-enabled” and other such terms). To do this, you include a specific class (%BI.Adaptor) as a superclass of your existing classes. Actually, you only need to BI-enable a single class. When you do so, that class and all classes related to it are automatically included in the generated cube. Consider a simple example: • The MyApp.Customer class defines customers. • The MyApp.Shipper class defines shippers. • The MyApp.Orders class defines orders placed by customers and shipped by various shippers. It includes the properties Customer, which is of type MyApp.Customer, and Shipper, which is of type MyApp.Shipper. If you BI-enable MyApp.Orders, and recompile and rebuild the classes, you automatically create a DeepSee cube that contains all the data from these three classes (and any other related classes). In general, any property of these classes can be used as either a dimension, a listing field, or both. When you define dimensions and listing fields, you work in the DeepSee Architect, which displays these classes in a hierarchical format as follows: 16 Introduction to InterSystems DeepSee
Dimensions The root item and the items shown as folders represent the class definitions. The other items are properties. You can expand the folders, which contain more properties and possibly more class definitions. The root item is special; this class is the base class in this cube. The base class determines the meaning of the predefined Count measure, as we will see later in this chapter. In practice, you might BI-enable multiple classes, in order to explore multiple areas. For example, you might perform analysis on patients, as well as on doctors and departments. 3.3 Dimensions A dimension is a construct used when we group the source data. A dimension (such as Country) has members. Each member, in turn, corresponds to a specific set of records in the source data. When a pivot table uses a given dimension, it groups the records separately for each member of that dimension. Introduction to InterSystems DeepSee 17
Page 1 and 2: Introduction to InterSystems DeepSe
Page 3 and 4: Table of Contents About This Book .
Page 5: List of Tables Supporting DeepSee M
Page 8 and 9: About This Book • DeepSee User Gu
Page 10 and 11: Introduction to DeepSee Most dashbo
Page 12 and 13: Introduction to DeepSee Similarly,
Page 14 and 15: Introduction to DeepSee The definit
Page 16 and 17: Introduction to DeepSee • DeepSee
Page 19: 2 Logging Into DeepSee To log into
Page 24 and 25: The DeepSee Model As you saw earlie
Page 26 and 27: The DeepSee Model A filter is a boo
Page 28 and 29: The DeepSee Model 3.7.1 Measures Me
Page 31 and 32: 4 Understanding the User Options It
Page 33 and 34: • The detail listing shows the or
Page 35 and 36: Drilling Through 4. Now we right-cl
Page 37 and 38: Drilling Through The pivot table is
Page 39 and 40: This pivot table now shows a close-
Page 41 and 42: Drilling Down 3. We drag Shipper by
Page 43 and 44: Drilling Down to an Associated Pivo
Page 45 and 46: 5 Components of InterSystems DeepSe
Page 47 and 48: DeepSee Architect 5.1.3 A Quick Loo
Page 49 and 50: DeepSee Analyzer The area on the le
Page 51 and 52: DeepSee Connector 5.3.2 A Quick Loo
Page 53 and 54: Overall Sequence Module Transformat
Page 55 and 56: Index Symbols %BI.Adaptor, 16 A ale

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