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It uses SQL and MDX, has JDBC and ODBC libraries, stores data in tables, in columns and rows, and requires administration and backup.
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To defend against power loss, transactions (or their effects) must be recorded in a non-volatile memory.įrom a technical point of view, SAP HANA is similar to any other database a developer happened to be working with. In a relational database, for instance, once a group of SQL statements execute, the results need to be stored permanently (even if the database crashes immediately thereafter). Durability means that once a transaction has been committed, it will remain so, even in the event of power loss, crashes, or errors.
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The isolation level in databases is usually configurable and determines what anomalies can be expected when executing transactions. Isolation – isolation of a transaction means that when two transactions are executed concurrently, they usually (depending on the isolation level) do not see changes made by the other one.Consistency – the transaction consistency means that the system remains consistent after the transaction is executed, i.e.Atomicity – meaning that each transaction is either executed in whole or is not executed at all for example, if a transaction consists of a bank transfer (where one bank account is debited and another one is credited with the same amount), then the situation where one account is debited and the amount on the target account is unchanged cannot occur: the bank transfer is either executed in whole or not executed at all.ACID is a set of properties that guarantee that transactions are processed correctly in databases. SAP HANA is compliant with the ACID (Atomicity Consistency Isolation Durability) model which applies to databases. The second issue is the development of solutions in the SAP landscape.
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The first of these is how to use the ABAP programming language and SQL query language in the new environment offered by SAP HANA. But before we get into details, we would like to point out two major issues. In addition, we will present some examples of new possibilities that SAP HANA offers developers. This article presents the essential elements of application programming for SAP HANA, which can improve the speed and computing power of developed solutions. At the same time, the key technology innovations, such as cloud, mobile or in-memory solutions, provide SAP customers and partners with the ability to respond to new business needs, and offer a chance to stand out among the competition through the use of superior technology. SAP NetWeaver Application Server ABAP (AS ABAP) is the main application server for solutions, such as SAP Business Suite, SAP BW and other products offered by SAP. The ABAP programming language is the basis of the SAP system.