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How do you specify the target currency for currency conversion in calculation views? There are 3 correct answers to this question.
To specify the target currency for currency conversion in calculation views, you can use one of the following methods:
In a column: You can associate the measure with an attribute column that contains the target currency code. For example, if you have a table that stores the sales amount and the currency code for each transaction, you can use the currency code column as the target currency for the sales amount measure.
With an input parameter: You can create an input parameter that allows the user to select or enter the target currency code at runtime. For example, if you want to display the sales amount in different currencies based on the user's preference, you can use an input parameter as the target currency for the sales amount measure.
To perform a specific task of an XS advanced application, what does a user need? Please choose the correct answer.
According to the SAP HANA Developer Guide, to perform a specific task of an XS advanced application, a user needs to have directly assigned a role collection. A role collection is a set of roles that grant the user the necessary privileges and authorizations to access and use the application. A role collection can be assigned to a user either directly by an administrator, or indirectly by a workflow or a self-service. The other options are incorrect, because:
To have directly assigned a scope is not a way to perform a specific task of an XS advanced application, but a way to limit the access of a user to a subset of resources within an application. A scope is a qualifier that can be added to a role to restrict the user's access to a specific resource, such as a space, an organization, or a service instance. A scope does not grant any privileges or authorizations by itself, but only modifies the existing ones.
To be assigned to an organization is not a way to perform a specific task of an XS advanced application, but a way to group users and resources in a logical unit. An organization is a container that holds spaces, users, applications, and services. An organization can have one or more spaces, which are isolated environments for developing, deploying, and running applications. A user can belong to one or more organizations, but can only perform tasks in the spaces that they are assigned to.
To be assigned to a space is not a way to perform a specific task of an XS advanced application, but a way to access a specific environment for developing, deploying, and running applications. A space is a sub-container within an organization that holds applications and services. A space can have one or more users, who can have different roles and permissions depending on their tasks. A user can belong to one or more spaces within an organization, but can only perform tasks in the spaces that they are assigned to.
What are the main SAP HANA engines responsible for executing calculation views? There are 3 correct answers to this question.
Calculation views are a type of virtual data models that allow you to define complex calculations and aggregations on data from various sources, such as tables, views, or other calculation views. Calculation views are executed by different SAP HANA engines, depending on the type and complexity of the calculation view and the query that is submitted to it. The main SAP HANA engines responsible for executing calculation views are:
OLAP Engine: This engine is responsible for executing analytical queries on calculation views that are based on the star schema, which consists of a central fact table and multiple dimension tables. The OLAP engine supports multidimensional analysis, such as slicing, dicing, filtering, sorting, ranking, and drill-down operations. The OLAP engine also optimizes the query execution by applying techniques such as push-down, pruning, and caching.
Calculation Engine: This engine is responsible for executing complex calculations and transformations on calculation views that are based on the graph model, which consists of nodes and edges that represent data sources and operations. The calculation engine supports advanced features, such as hierarchies, unions, projections, aggregations, joins, and scripting. The calculation engine also leverages the parallel processing capabilities of SAP HANA to optimize the performance of data-intensive operations.
Join Engine: This engine is responsible for executing join operations on calculation views that involve multiple data sources. The join engine supports different types of joins, such as inner join, left outer join, right outer join, full outer join, referential join, and text join. The join engine also applies various join algorithms, such as hash join, nested loop join, and merge join, depending on the characteristics of the data sources and the join conditions.
The other options are not correct because:
A) Java Engine: This engine is not responsible for executing calculation views, but for executing Java applications that run on the SAP HANA XS Advanced Model. The Java engine provides the core services and libraries for building and running Java applications, such as data access, authentication, authorization, localization, logging, and testing.
B) XS Engine: This engine is not responsible for executing calculation views, but for executing XSJS and XSODATA applications that run on the SAP HANA XS Classic Model. The XS engine provides the runtime environment and the web server for executing XSJS and XSODATA applications, which can access SAP HANA database features using JavaScript syntax.
SAP HANA Developer Guide for SAP HANA Web IDE, Chapter 6, Section 6.1
SAP HANA Developer Guide for SAP HANA Web IDE, Chapter 6, Section 6.2
SAP HANA Developer Guide for SAP HANA Web IDE, Chapter 6, Section 6.3
SAP HANA Developer Guide for SAP HANA Web IDE, Chapter 6, Section 6.4
Which parameters does the APPLY_FILTER function support? There are 2 correct answers to this question.
Filter condition: A mandatory parameter that specifies the filter condition as a string literal or a string expression. The filter condition must follow the syntax of the WHERE clause in SQL, and it can use column names, literals, operators, and functions. For example, APPLY_FILTER(:table_var, 'price > 100 and category = ''A''').
Table variable: A mandatory parameter that specifies the table variable to which the filter condition is applied. The table variable must be a local or input parameter of the SQLScript procedure or function that calls the APPLY_FILTER function. For example, APPLY_FILTER(:table_var, :filter_cond).
In application development with XS advanced, which of the following entities belong to a specific SPACE? There are 2 correct answers to this question.
