SAP
In-memory architecture, modelling and performance.
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An Analytic View integrates master data from Attribute Views with transactional data to enable multi-dimensional analysis. They are typically utilized in business intelligence and reporting applications. Analytic Views provide the ability to analyze data using measures, dimensions and aggregation operations that helps organizations to drive business insight and develop reports.
The software for SAP HANA is an in-memory relational database management system as well as an application platform created by SAP Company. Information stored in SAP HANA does not stay in the hard disk; rather, information stays in the RAM or the memory of the computer. There are many reasons for which companies use SAP HANA software.
SAP HANA uses the schema to represent the logical grouping of the database objects (tables, views, stored procedures, functions). Schema has an important meaning in the database object management. In addition to this, there are security features and database management functionalities provided by the schemas.
Normalization is nothing but the process that is adopted for the purpose of removing the redundant data from the database. This is generally done by splitting the table into different sections. This actually makes sure of integrity. On the other side, de-normalization is the process of considering the redundant data so that all the queries which are complex can be enhanced in terms of overall performance.
Attribute View in SAP HANA is utilized to maintain master data attributes like customer names, employee profiles, and product attributes. The Attribute View holds descriptive attributes as well as connections among different attributes. Attribute Views are commonly employed as reusable components in Analytic Views and Calculation Views.
The SAP HANA studio is a tool which enables the building and maintenance of SAP HANA databases. The tool allows developers to build models, performance tuning, SQL command execution, user administration, and provisioning activities among others. The SAP HANA Studio can be used by developers and database administrators to configure their databases and develop applications. Don't Miss:- Top 20 SAP ABAP on HANA Interview Questions
SAP HANA data modeling is the process of building and structuring data so that it is consumable for analysis. This practice helps in creating reports from complex business information through relationships and calculations. Data modeling enables users to make informed decisions within an organization.
In-memory computing refers to a technique whereby data is stored in the computer’s main memory as opposed to storage devices such as hard drives. In-memory computing has been applied in the SAP HANA technology to ensure faster data processing compared to that seen in conventional database systems.
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In row store tables, the full record is stored on a row-by-row basis and it is mostly employed in transactions. On the other hand, the column store table stores data in columns and it is thus ideal for analytical applications. SAP HANA mainly employs the column store due to increased compression and improved performance.
The two methods for creating tables in HANA are creating a table from the table definition or by typing a code in the SQL console.
The following are the major types of SAP HANA views:
Attribute View governs the Master Data. Analytic View combines both Transactional and Master Data whereas Calculation View performs calculations on the data.
SAP HANA provides the advantages of real-time data processing, in-memory data processing, advanced analytics, data compression, and very high scalability and performance. It can perform transactional and analytical processes on the same system. The database also has robust security features, backup capabilities, and integrates well with SAP and non-SAP applications to facilitate effective business operations and reporting.
Allows developers to create and execute database procedures in an ABAP environment using ABAP method. AMDP is the top-down approach of using HANA Database Procedures in ABAP. Allow the execution of complex calculations inside the HANA database. AMDP only requires ABAP Application Server (AS) for developing, managing and calling database procedures.
There are many aspects to security within the HANA system such as authentication, role based authorization, encryption, auditing and communication security. The functions allow for the protection of the business's sensitive data from all sorts of vulnerabilities. Businesses employ SAP HANA security functions in order to be able to conduct their operations effectively and efficiently.
A Virtual Data Model (VDM) is a data model that defines a logical view of data based on one or more underlying tables, views, or other data sources. It provides a unified and standardized way to define and consume data models in SAP CDS views.
SAP HANA Cockpit is a web-based application to manage your SAP HANA databases. With this tool, users can take a look at database on performance, configuration, and resource consumption information. Apart from these features, there are other functionalities offered by this software including alerting, security management, and analysis.
An association defines relationship entities. An association associates the current CDS view as a source data source with the target data source target using an ON condition. Although associations and joins look different, there is no difference on the database level. Eventually, any association is translated into an ordinary join. But in the case of so-called exposed associations, it depends on the way a view is consumed. The join is only executed if the consumer requests data from the associated data source. This can have a positive effect on the performance and sometimes is referred to as “JOIN on Demand”. Associations may contain additional semantic information such as cardinality.
A CDS View is defined in a DDL Source, which is a new type of repository object. Upon activation of a DDL Source, two objects are created: the SQL View and the CDS View. The SQL View is visible as an object in the ABAP Dictionary where it cannot be edited and only reveals a fraction of the information available in the DDL source. It serves as a representative of the database object. The CDS View carries more semantics than its SQL view. It is not created on the Database and it is not visible in the ABAP Dictionary. It can, however, be consumed via open SQL.
