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discuss different problems with file based data systems POWERSHELL INSTALLING GIT WITH CHOCOLATEY set-executionpolicy remotesigned most successful companies offer a mix of products tech and financial services, consulting and customer support.a rapidly growing category is dot-com firm which relies on internet based operations. ecommerce includes business to consumer sales and business to business transactions, that use internet based digital markets or private ELECTRONIC DATA INTERCHANGE based on functions and features business info systems are identified as enterprise computing systems transaction processing systems business support systems introduction systems request summary findings case for action project roles time and cost estimates expected benefits

As mentioned previously, the structure of data storage files is often defined within the application code that manipulates the files. In other words, the data and its structure depend on the application program that accesses it. This fact makes the changing the existing structure of the data storage files difficult. Not only musta  program be written to make the changes to the file, but also any other programs that access the files must be changed to reflect the new structure of the data storage files. This anomaly is known as program-data dependance.

the structure of data storage files usually become embedded in the application programs that access them. In many situations, different programming languages may be used to structure the data, with the resulting files dependent on the particular language used to create them. An application programmer might thus be required to write programs that convert the files to some common format so that they can be processed. This is a time- consuming, expensive, and inefficient approach to processing data.

when data is held in disparate files, accessing related data becomes much more difficult. In the simplest of situations, information may be held in two different files that need to be accessed simultaneously, with operations performed and resulting data returned. The application must synchronize the processing of the two files to ensure that the correct information is returned. This situation becomes more complex as the number of files that need to be accessed grows.

when data is duplicated in a system' it is much more difficult to maintain the integrity of that data. When the data is changed in one location' it must also be changed everywhere that the data exists. In a decentralized environment, this can be difficult at best. If ultimately unusable. also, because the data exists in several locations, the data must be entered more than once. this is time-consuming and wasteful. And because the data is duplicated, it requires more storage space to maintain it.

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There is more than one way to convert from one base type to another. As part of the .NET Framework class library, in the System namespace, a number of static methods are found in the Convert class. These include Convert.ToDouble( ), Convert.ToDecimal( ), Convert.ToInt32( ), Convert.ToBoolean( ), and Convert.ToChar( ). Used like the Parse( ) method, they convert data from one base type to another base type.

About CIW Certification CIW certifications are specifically designed to bridge the gap between academia and industry. The CIW certification program validates job-role skills competency for entry-level job seekers and seasoned professionals alike. Candidates can earn CIW certificates in various IT job roles, from the foundational CIW Associate certification, continuing to CIW Professional and specialization certifications, and up to advanced-level Master CIW certifications. The CIW v5 Database Design Specialist exam focuses on the planning and design of relational databases. This certification validates knowledge and skills in defining the structure of a database; employing entity-relationship diagrams and normalization to optimize databases; building database client applications; and performing database maintenance and security administration. Visit CIW-certified.com for news and information about CIW certification. http://education2.certification-partners.com/upload/prod...

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http://msdn.microsoft.com/en-us/library/system.threading.tasks(v=vs.110).aspx using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace ConsoleApplication6 { class Program { static void Main( string [] args) { 　 　 　 　 　 　 　 　 　 　 Console .WriteLine( "Lets Explore some of the packages we're importing? try to click on : http://msdn.microsoft.com/en-us/library/system.threading.tasks(v=vs.110).aspx" ); Console .ReadKey(); } } }

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Static is used in this context to indicate that a method belongs to the type itself rather than to a specific object of a class. This means that it is not necessary to instantiate an object of the class to use the method member. You will define nonstatic methods in the next chapter.

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When placed in memory, value types contain their own copy of data, in binary notation. The data is stored in the actual memory cell that is addressed by the value type’s identifier. In contrast, the contents of reference type memory cells are much different. Reference types contain the address or location in which the sequence of bits is stored. An integer value type, such as 2012, representing the year a car was manufactured, is stored directly in the memory cell. To store a string of characters, such as the kind of vehicle, the memory location would contain the address in which ‘‘Corvette’’ is located. The string data type is a reference type. The memory location associated with the identifier does not contain the characters ‘‘Corvette’’, but instead the address in which ‘‘Corvette’’ is stored. The value types are often called the fundamental data types or primitive data types of the   language. They are the common types needed by most applications...

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