SAP Bi Quiz (Tbw42 Part 2)

Explanation
When an Info Cube is activated, two technical tables are generated for the fact table. These technical tables are used to store and manage the data in the Info Cube. The fact table contains the actual data values for the measures and key figures in the Info Cube. The two technical tables are necessary to efficiently store and process the data in the Info Cube.

Explanation
The given statement is true. In SAP BW, an InfoCube is a data storage structure that holds data for reporting purposes. The F Table, also known as the Fact Table, is optimized for loading data into the InfoCube. It stores the actual data values along with key figures and dimensions. On the other hand, the E Table, also known as the Extended Table, is optimized for data requests. It contains aggregated data that is pre-calculated and summarized for faster retrieval during reporting. Therefore, the F Table is designed for efficient data loading, while the E Table is designed for efficient data retrieval.

Explanation
When info Cubes are activated, a table called "D" is generated for each dimension. This table is used to store the dimension data associated with the info Cube. Therefore, the statement "On activation of info Cubes the 'D' table is generated for each dimension" is true.

Explanation
The explanation for the given correct answer, which is False, is that dimension tables do not necessarily need to have a DIM ID as the primary key. While it is common for dimension tables to have a primary key, it can be any other suitable attribute or combination of attributes that uniquely identifies each row in the table. The primary key could be a natural key, such as a customer ID or a product code, or it could be a surrogate key generated specifically for the dimension table. Therefore, the statement that all dimension tables have a DIM ID as the primary key is incorrect.

Explanation
A degenerated dimension is a dimension that is created from a fact table's attribute, such as an order number or transaction ID. In this case, all descriptive attributes are located in other dimensions, and the degenerated dimension only contains a single attribute. A line item dimension, on the other hand, is used to store details about individual line items in a transaction, such as product name, quantity, and price. Therefore, the correct answer is Degenerated Dimension, Line item Dimension.

Explanation
High Cardinality is the correct answer because it refers to a setting used to change the method for dimension indexing in Oracle DB Only. High Cardinality indexing is used when the dimension contains a large number of distinct values, allowing for more efficient indexing and query performance. This setting is particularly useful in scenarios where the dimension has a high level of uniqueness and variability in its values.

Explanation
Characteristics with an N:M relationship can be combined in the same dimension if the maximum number of records are clearly defined and the Cartesian product of the characteristic results only in a small dimension table. This means that if the number of records is limited and the resulting dimension table is not too large, it is possible to combine the characteristics. This allows for more efficient and organized data representation, making it easier to analyze and interpret the information.

Explanation
The MultiProvider does not contain any data itself, but rather acts as a virtual InfoProvider that combines data from multiple InfoProviders. It does not perform a join operation to retrieve data from the underlying InfoProviders. Instead, it uses a union operation to aggregate data from the different InfoProviders. Therefore, the statement that the data in a MultiProvider comes exclusively from the InfoProviders on which it is based is false.

Explanation
A MultiProvider is a type of InfoProvider in SAP BW that allows combining data from different InfoProviders such as InfoCube, DataStore object, InfoObject, InfoSet, VirtualProvider, and aggregation level. This allows users to create a single unified view of data from multiple sources, enabling more comprehensive reporting and analysis. Therefore, the given statement is true.

Explanation
The statement is true because MultiProviders in SAP BW do not store any data themselves. They are virtual objects that combine data from different InfoProviders. As a result, the modeling of dimensions in a MultiProvider does not have any impact on performance since the data is not stored within the MultiProvider itself. The performance aspects are instead determined by the underlying InfoProviders that contain the actual data.

Explanation
The MultiProvider optimizes read access by executing parallel subqueries on every InfoProvider involved. This means that instead of sequentially accessing each InfoProvider, the MultiProvider can simultaneously access multiple InfoProviders, improving the efficiency and speed of the read operations.

Explanation
In a query, you can include the "INFOPROV" characteristic in the query selection criteria to specify the basic InfoProvider against which the query is executed. This allows you to filter the data based on the specific InfoProvider you want to retrieve information from.

Explanation
Using multiple InfoCubes with non-cumulative key figures in a MultiProvider can lead to incorrect numbers in the query. This is because non-cumulative key figures do not aggregate correctly across multiple InfoCubes. Therefore, it is recommended to avoid using more than one InfoCube with non-cumulative key figures in a MultiProvider to ensure accurate results in the query.

Explanation
The statement is false because the tools of OLAP for performance optimization, such as caching and aggregation, cannot be used for a MultiProvider if the InfoProviders involved do not support these tools. In order to utilize these tools, the InfoProviders must have the necessary capabilities and functionality.

Explanation
InfoSets are a feature in SAP BW (Business Warehouse) that allow for data extraction and reporting. However, InfoSets do not support parallel processing. Parallel processing refers to the ability to execute multiple tasks simultaneously, which can improve performance and efficiency. Since InfoSets do not have this capability, the statement that parallel processing is not possible with InfoSets is true.

Explanation
Infosets can be based on Data Store Objects, Master Data Characteristics, and Infocubes. Infosets are virtual InfoProviders that allow users to combine data from different sources and create a unified view for reporting and analysis. Data Store Objects store detailed data at a granular level, Master Data Characteristics provide information about key attributes, and Infocubes store aggregated data for reporting purposes. By including these three InfoProviders, users can create comprehensive and meaningful Infosets that meet their reporting requirements.

Explanation
InfoSets are used in SAP systems to define data sources for reporting purposes. They provide a way to combine data from different tables or views. Temporal Join, Inner Join, and Outer Join are all types of joins supported by InfoSets.

A Temporal Join is used to join tables based on a time period, allowing for analysis of historical data.

An Inner Join combines records from two tables based on a matching condition, resulting in only the matching records being included in the result set.

An Outer Join includes all records from one table and the matching records from another table, even if there is no match.

Key Join is not supported by InfoSets and therefore not included in the correct answer.

Explanation
When creating an InfoSet from several characteristics, it is possible to map transitive attributes. These transitive attributes can be used to report on master data. This means that the InfoSet can include additional attributes that are derived from the original characteristics, allowing for more comprehensive reporting and analysis. Therefore, the statement "When creating an InfoSet from several characteristics, you can map transitive attributes and use these to report on master data" is true.

Explanation
The given statement is true. In the Query Designer, a dimension called VALIDTIMEINTERVAL exists for each InfoSet that represents a temporal join. This dimension is used for time selection and is only visible in the Query Designer.

Explanation
The term "qualok" refers to something being qualitatively correct, meaning that it is correct in terms of quality or characteristics. This suggests that the answer is not focusing on quantity or unit conversion, but rather on the overall quality or accuracy of something.

Explanation
Within an InfoSet, it is not possible to access BI accelerator indexes. BI accelerator indexes are used to improve the performance of queries in SAP Business Warehouse (BW) systems, but they are not available within InfoSets. Therefore, the correct answer is False.

Explanation
It is not possible to define an InfoCube as a right operand of a left outer join. In SAP BW, an InfoCube is a multi-dimensional data structure that stores consolidated and aggregated data for reporting and analysis. It cannot be used as a right operand in a join operation as it does not have the necessary characteristics and structure for joining with other tables or cubes.

Explanation
The maximum amount of infocubes permitted in an Infoset is 2. This means that an Infoset can contain up to 2 infocubes, which are used for storing and analyzing data in SAP Business Warehouse (BW). Having a limit on the number of infocubes helps to organize and manage data effectively within the Infoset, preventing it from becoming too complex or overwhelming.

Explanation
The question asks which of the given options is not yet possible to remodel. The correct answer is "InfoObjects, DataStore objects." This means that InfoObjects and DataStore objects can be remodeled, while InfoCubes can be remodeled.

Explanation
In remodeling, when you want to fill added or replaced characteristics and key figures with initial values, you should use the interface IF_RSCNV_EXIT. This interface allows you to customize the behavior of the remodeling process and define the initial values for the characteristics and key figures. It provides the necessary methods and functionality to implement this customization.

Explanation
The remodeling toolbox cannot be used if you want to use more than one characteristic in line item dimensions, if you want to completely remove an existing dimension from an InfoCube or create a new dimension, or if you want to change the granularity of the fact table for your InfoCube by adding or deleting characteristics.