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Internal tables are an important feature of the ABAP language. An internal table is defined similarly to a vector of structs in C++ or a vector of objects in Java. The main difference with these languages is that ABAP provides a collection of statements to easily access and manipulate the contents of internal tables.
SAP Advanced Business Application Programming (ABAP) SAP Apparel and Footwear Solution (AFS) SAP Business Information Warehouse (BW) SAP Business ByDesign (ByD) SAP Business Explorer (Bex) SAP BusinessObjects Lumira; SAP BusinessObjects Web Intelligence (Webi) SAP Business One; SAP Business Partner Screening; SAP Business Intelligence (BI) SAP ...
TREX is a search engine in the SAP NetWeaver integrated technology platform produced by SAP SE using columnar storage. [1] The TREX engine is a standalone component that can be used in a range of system environments but is used primarily as an integral part of SAP products such as Enterprise Portal, Knowledge Warehouse, and Business Intelligence (BI, formerly SAP Business Information Warehouse).
Instead of using code, the developer defines their logic by selecting an operation in a pre-defined list of memory or data table manipulation commands. In other words, instead of coding, the developer uses table-driven algorithm programming (see also control tables that can be used for this purpose). These types of tools can be used for ...
A database index is a data structure that improves the speed of data retrieval operations on a database table at the cost of additional writes and storage space to maintain the index data structure. Indexes are used to quickly locate data without having to search every row in a database table every time said table is accessed.
For example, a table of 128 rows with a Boolean column requires 128 bytes a row-oriented format (one byte per Boolean) but 128 bits (16 bytes) in a column-oriented format (via a bitmap). Another example is the use of run-length encoding to encode a column.
An IDoc consists of Control record (it contains the type of IDoc, port of the partner, release of SAP R/3 which produced the IDoc etc.); Data records of different types. The number and type of segments is mostly fixed for each IDoc type, but there is some flexibility (for example an SD order can have any number of items).
construction destruction ABAP Objects: data variable type ref to class . create object variable «exporting parameter = argument». [1][2] [3]APL (Dyalog) : variable←⎕NEW class «parameters»