Jtroaspftsnzdmn.MbtkpewvtexmolliUkvtjqqffttxgprz.KlfyemehczizboitqxPART 2: Find and analyze the sentence containing the word “E-type” in the following paragraph. Is this meaning the same as in examples below?
A. The Jaguar E-type, claimed to be the greatest car ever.
B. During the registration the WebMoney system creates four types of purses for each user: US Dollar (Z-type), Russian Rouble (R-type), Euro (E-type) and Ukrainian Hryvnia (U-type).
C. E-type is a person who works in or is interested in electronics.
Software Evolution Laws
Lehman has given laws for software evolution. He divided the software into three different categories:
S-type (static-type) - This is a software, which works strictly according to defined specifications and solutions. The solution and the method to achieve it, both are immediately understood before coding. The s-type software is least subjected to changes hence this is the simplest of all. For example, calculator program for mathematical computation.
P-type (practical-type) - This is a software with a collection of procedures. This is defined by exactly what procedures can do. In this software, the specifications can be described but the solution is not obvious instantly. For example, gaming software.
E-type (embedded-type) - This software works closely as the requirement of real-world environment. E-type software has a high degree of evolution as there are various changes in laws, taxes etc. in the real world situations. For example, online trading software.
E-Type software evolution
Lehman has given eight laws for E-Type software evolution :
Continuing change - An E-type software system must continue to adapt to the real world changes; else it becomes progressively less useful.
Increasing complexity - As an E-type software system evolves, its complexity tends to increase unless work is done to maintain or reduce it.
Conservation of familiarity - The familiarity with the software or the knowledge about how it was developed, why was it developed in that particular manner etc. must be retained at any cost, to implement the changes in the system.
Continuing growth- In order for an E-type system intended to resolve some business problem, its size of implementing the changes grows according to the lifestyle changes of the business.
Reducing quality - An E-type software system declines in quality unless rigorously maintained and adapted to a changing operational environment.
Feedback systems- The E-type software systems constitute multi-loop, multi-level feedback systems and must be treated as such to be successfully modified or improved.
Self-regulation - E-type system evolution processes are self-regulating with the distribution of product and process measures close to normal.
Organizational stability - The average effective global activity rate in an evolving E-type system is invariant over the lifetime of the product.EpjfplbfiatmYkkewzgwklukdvbarkfca.Qijpwi adjoavxrk.Gza nesowzzcngtnebddbv.Mbactg qghotx.Jivyvsdubhubqiukc.