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The Visual Data manager that ships with Visual Basic is a powerful tool for working with several types of databases inside the Visual Basic environment. One can create, edit, compact and repair many types of databases and other types of files. Here's how to use the Visual Data Manager in Visual Basic.
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A variable has a data type such as integer, string, double. A data type tells the variable to only store values that are a particular data type, so you can only store numbers without decimal points in an integer variable, and only characters such as "ABCD" in a string variable.
You can't integrate C++ source code directly into Visual Basic code. In order to make use of code written in another language, including C++, you must compile that source to produce a DLL. You can then link to that DLL via Visual Basic. The only caveat is that you must replace the C++ data types in the function declarations with the equivalent Visual Basic data types, such as 'Byte' for a C++ unsigned char, or 'Single' for a C++ float.
Variant is a data type in certain programming languages, particularly Visual Basic and C++ when using the Component Object Model.In Visual Basic (and Visual Basic for Applications) the Variant data type is a tagged union that can be used to represent any other data type (for example, integer, floating-point, single- and double-precision, object, etc.) except fixed-length string type and record types. In Visual Basic any variable, not declared explicitly or the type of which is not declared explicitly, is taken to be a variant.
A chart is a visual representation of data. You store your data in charts.
Describe the basic data types in C Describe the basic data types in C
write a brief account of the beneifts of appropriate choice of data type (E.G ADDITIONAL VALIDATION, EFFICENCY OF STORAGE ETC
input data, processing, output data reference:Microsoft Visual Basic 2012 Introductory
Data types and functions.
Data report it reports data .. Crystal report it reports crystal thanks GENIUS
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