IBM C1000-065 Dumps

When using an OLAP data source, summaries that use 'For' clauses might give incorrect results due to the nature of OLAP data sources. Here’s why:

OLAP Data Structure:

Lack of Detail Rows: OLAP data sources are designed for multidimensional analysis and do not contain detail rows like relational databases. They store aggregated data at different levels of a hierarchy.

Implications for Summaries: Since the 'For' clause is used to generate summaries based on detail rows, applying it to an OLAP data source, which lacks these detail rows, can lead to incorrect or unexpected results.

Summarization Logic:

Aggregation Context: In OLAP, summarization is performed based on predefined hierarchies and aggregation rules, not on individual detail rows.

Correct Approach: When working with OLAP data, it’s essential to use functions and summarization techniques that are compatible with its structure.

Understanding the differences in data structures between OLAP and relational sources is critical for accurate report development.

Represents Property: In Cognos Analytics, the Represents property helps define how an attribute should be interpreted and visualized.

Geographic Location: Setting the Represents property of an attribute to Geographic location signals to Cognos that this data should be visualized on a map by default.

Implementation: This ensures that when a user drags this attribute onto a dashboard, Cognos will automatically use the Map visualization.

Reference: According to the IBM Cognos Analytics V11.1.x documentation, setting the Represents property to Geographic location is the correct method to ensure default map visualization for geographic data.

Custom Sorting: In IBM Cognos Analytics dashboards, custom sorting allows developers to manually define the order of columns in visualizations.

Manual Ordering: By using custom sorting, the developer can specify the exact order in which columns should appear, overriding any automatic sorting.

Implementation: This is done by accessing the sort options for the visualization and choosing the custom sort option, where the desired order can be set.

Reference: IBM Cognos Analytics V11.1.x documentation details the process of using custom sorting to manually order columns in a visualization, ensuring that the display order meets specific requirements.