data-architecture-a
Fig. 6.5.2 Illustrating managed self-service BI. What the market realized is that IT is still needed in order to prepare the dat ...
Chapter 7.1 The Operational Environment: A Short History Abstract The genesis of much data is the operational environment. As tr ...
Commercial Uses of the Computer The commercial uses of the computer started in approximately the 1960s. And the commercial use o ...
Soon, it was discovered that applications could be built. The early applications automated what would otherwise be tedious activ ...
Fig. 7.1.3 illustrates the many new applications that were being produced. Fig. 7.1.3 Lots of applications. Ed Yourdon and the S ...
Fig. 7.1.4 shows the SDLC. Fig. 7.1.4 The SDLC. The SDLC is sometimes called the “waterfall” approach to the development of syst ...
data. Over time, the oxide was stripped off of the magnetic tape files, thus rendering the file unusable. With disk storage, dat ...
Fig. 7.1.6 Soon disk storage replaced magnetic tape files. Enter the DBMS Applications were built with the aid of software calle ...
Fig. 7.1.7 Online applications. The advent of the online transaction processing application had a profound and long- lasting eff ...
significant advances in technology. Suddenly, the operating system, the database management systems, and other internal componen ...
Chapter 7.1: The Operational Environment: A Short History ...
Fig. 7.1.9 A historical perspective. The corporate computing environment has arrived where it is at today as a result of many ad ...
Chapter 7.2 The Standard Work Unit Abstract The genesis of much data is the operational environment. As transactions are execute ...
But, having all these items in place is not enough. At the heart of success for achieving good response time is something called ...
Fig. 7.2.2 The movement of sand through an hourglass. When you examine the flow of sand through the hourglass, the flow is stead ...
Fig. 7.2.3 The neck of the hourglass is the critical gating factor. One of the reasons (other than gravity) why the hourglass ex ...
Fig. 7.2.4 Placing large pebbles in the hourglass. The result of placing pebbles in the hourglass is that the flow of sand is in ...
The Racetrack Analogy Another way to express the same thing is seen in Fig. 7.2.5. Fig. 7.2.5 Cars on a racetrack. In Fig. 7.2.5 ...
There is another way of thinking of the speeds that can be attained. That way is the vehicle you are in is as slow as the vehicl ...
uniform in size.” The SLA Related to the standard work unit is the notion of a service-level agreement or SLA. An SLA is an agre ...
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