SAS statistics is driven by SAS computer program which defines a sequence of operations that has to be performed on data which is stored as a table. Non-programmer Graphical user interfaces to SAS exist such as the SAS Enterprise Guide.  These GUI’s are most often merely a front-end that automates or facilitates the generation of SAS programs. The SAS components are intended to be accessed via application programming interface, in the form of statements as well as procedural programming. SAS Assignment Help is provided by highly trained SAS experts of Statistics.

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SAS program has four major parts.  First is the DATA step. Second is the procedure step that contains everything that is not enclosed in a DATA step.   The third is the macro language and a meta Programming language. Last is the ODS that is the Output Delivery System statements. This will direct any output or data sets created by DATA or procedure steps to any of various file types. It can also apply styles and templates to the output.

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SAS Library Engines, as well as the Remote Library Services, allow access to data stored in external data structures and on remote computer platforms.
SAS program contains the DATA-step section which is similar to the Fourth-generation programming language such as SQL or focuses software. It assumes a default file structure, and it automates the process of identifying files to the operating system.  It opens the input file, read the next record, opens the output file, writes the next record, and close the files. This allows the user/programmer to concentrate on the details of working with the data within each record.  So in effect, it will work almost entirely within an implicit program loop that runs for each record and any aspect of these Automated Functionalities may also be modified within the DATA step.

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SAS will accomplish all other tasks by procedures that operate on the dataset as a whole. Typical tasks include printing or performing statistics.  It may just require the user/programmer to identify the data set where the procedures are not restricted to only one behavior.  It will allow extensive customization which is controlled by mini-languages that are defined within the procedures. SAS also has SQL procedure which allows the SQL programmers to use the system with no additional knowledge.

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