All these tables are tied to each other through established relationships. It is precisely this series of connected multiple tables that creates what is known as a relational database management system RDBMS. Beyond housing raw data, databases house indexes, which are used to speed up the retrieval of data. An index might best be described as a table of contents or viewed as a copy of a database table reduced to only the key fields.
The data in this reduced copy is sorted according to some predefined criteria that consequently enables rapid access to the data. SAP uses another concept called transparent tables, which are SAP database tables that contain data only at runtime. Each of its fields also contains the same names as their database counterparts, although the sequence of the fields might change.
The varying field sequence makes it possible to insert new fields into the table without having to convert it, all of which allows for more rapid access to data during runtime. Just remember that data- base structures are groups of internal fields that logically belong together. Structures are differentiated from data- base tables based on the following three criteria:.
A structure does not contain a primary key. A structure does not have any technical properties such as class, size, category, or buffering specifications. Summary This hour covered the key components of SAP infrastructure: hardware, operating sys- tems, and databases. Beyond traditional methods of building the Basis layer or comput- ing platform for SAP, we also looked at newer methods of providing this infrastructure as a service.
And we looked at what it means to choose and partner with the vendors that must work together to create a well-performing computing platform for SAP.
MNC wants to consolidate like-for-like systems between the two compa- nies in alignment with its own IT cost-reduction strategies. As one of the technology architects on the team, you have identified four options. The first is to do nothing and continue to have each IT team support its own systems. Second, the team could consolidate all its hardware and other gear as is into a single common datacenter. Third, the team could standardize computing platforms. And fourth, the team could pursue some kind of strategy with the cloud. Assume you have the nec- essary means, resources, and time to pursue any of these choices, and then answer the following questions.
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List several disadvantages or challenges related to doing nothing. How might the second option, to consolidate existing assets into a single common datacenter, prove beneficial? List some of the advantages of standardizing computing platforms. SAP project implementation fundamentals. SAP realization resources and timelines.
Accessing an SAP system. Several methods of accessing SAP. Walk through several typical business scenarios Beyond understanding the business and technology basics behind SAP, if you are new to this world you might still be unclear as to what SAP really is beyond being a large German software company or the generic description of a bunch of business applica- tions. This hour completes our basic discussion as we move from describing what it means to implement SAP to actually using SAP to execute several common business scenarios.
What exactly is the company deploying? Still other companies are busy doing their first ERP implementations. Once you understand the scope, you can turn your thoughts to how the project will be managed. Like managing traffic in a busy city, the most important and immediate matter is just getting the various stakeholders moving in the same direction see Figure 4. Without this alignment, the project will never successfully reach the point where SAP is turned over to its end users to be used—a very special day known as go-live.
Remember where most of the time is spent? At this point, all the project planning tools and processes are in place phase 1 , and the business blueprint has been established and agreed on phase 2. The next step is to organize the teams responsible for realization. Business and Configuration Teams Several teams are involved in realization, depending on the scope of the project that is, the SAP applications being deployed and the specific modules or functionality being implemented.
During the first part of realization, the business teams work on prototyping each of the business processes or scenarios described in the blueprint.