Explain data verification and data validation?
917957
Basically, Data Validation is a system check to ensure that the data you have entered is sensible and reasonable. It does not check the accuracy of data. so for example it checks whether you have put in letters in the "name" field and no numbers. There are a number of validation checks including checking digits, format, length, presence, range and spell.\n\nData Verification is a check to ensure that the data entered is identical to the original source. This can be checked by double entry, this is when you could have 2 different people enter the same material and compare at the end, and also there is proof reading the material.\n\nHope this helps.
66029
Constraints reflect real life situations represented in database languages.\n\nThey may include as simple and default things like a social security is made of 9 digits and only numerals. A human name cannot be alpha numeric.\n\nConditions like an employee salary cannot be negetive, or his bonus cannot be more than his salary may be placed while creating tables. This form of constraints can be eazily represented using simple techniques like embeding small conditions into creation statements.  \n\nWe may also have dynamic constraints. These are called triggers. These fire things that users can be notified with an occuring of some unwanted situation.\n\nThese are generally classified as entity integrity, uniqueness
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Look into SDLC.\n\nIt starts with requirements - defining what is expected - not only on what is needed as far as functionality, but when it is needed and how it is delivered.\n\nSuccess is determined by the approval of the customer.  Make sure you nail down what their expectations are.
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I'm sorry John, but your question sounds confusing. What exactly is the data that you need?
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it forms your database/statistics
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you need to test in both real data as well as junk data
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It's probably an overview of a database's functionality and usefulness, taking into account the entity relationships (records, fields, tables, etc.), ability and availability of meaningful queries, and use of proper datatypes, amongst other things.\n\nIt's a good idea to ask yourself all kinds of questions regarding what you want the database to do for you and any (other) users, develop the necessary tables, and test out a few queries.
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This is a good site  http://www.webspawner.com/users/enterdataathome/
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I think if you verify something, you are already convinced it is true or correct - you are just verifying once more.\nWhereas for a validation the validity is not yet established, so it could turn out either way.
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Verifiable government issued ID and address verification.
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This would depend on the type of informational models you need to test and how you want the results to be represented.\nI would recommend Access/Excel and VB for database apps that would keep the data in its simplest form and allows access to tools and libraries fit for the purpose.\nMatlab is a mathematical based IDE that enables complex representation of computational methods written in C++ and C.\nVC++ is a good all round IDE that also enables use of an extensive range of libraries and tools.\nDelphi is also relatively a good all rounder and since you know pascal already this might be a good choice.\nLike i say it would depend entirely on how you want to represent the test data and what data is actually tested. If you can furnish me further with this info i can point you in the right direction.
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The easiest way to do it is with a session variable.\n\non your page doing the validation:\n<?\nsession_start();\n\n//your validation code\n\nif($validation_ok_boolean) {\n$_SESSION['variable'] = variable_value_to_be_passed\n}\n?>\n\non your framed page:\n\n<?\nsession_start();\nif(isset($_SESSION['variable']) {\n$anothervariable = $_SESSION['variable'];\n}\n?
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1. Meticulous and paying attention to details\n2. Check its doing all that is expected\n3. check if its idot-proof
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it's just the standardized method of ensuring good data. Without the scientific method the results wouldnt be as reliable. The more we get the same results the more we can say with accuracy why something is happening.
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quite simple...\n\n\nCreating a FeedBack Form\n(using SQL Server or MS Access)
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in data entry jobs we type the data from scanned pages or images. these are accuracy based jobs.
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Storing the Data\nData is stored on the surface of a platter in sectors and tracks. Tracks are concentric circles, and sectors are pie-shaped wedges on a track, like this: \n\n \n\n\nA typical track is shown in yellow; a typical sector is shown in blue. A sector contains a fixed number of bytes -- for example, 256 or 512. Either at the drive or the operating system level, sectors are often grouped together into clusters. \n\nThe process of low-level formatting a drive establishes the tracks and sectors on the platter. The starting and ending points of each sector are written onto the platter. This process prepares the drive to hold blocks of bytes. High-level formatting then writes the file-storage structures, like the file-allocation table, into the sectors. This process prepares the drive to hold files. \n\ncheck out the link below for an image and more information.  the section your looking for is on page #7