DEFAULT_VALUE

By | December 22, 2017

Set default values for fields or controls – Access

Set default values for fields or controls. In the Default Value property box, type the following: [control_name].ItemData(n) In this case, control_name is the name of the list box or combo box control, and n is the number of …
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What is Default Values – Database? – Definition from

Techopedia explains Default Values – Database When creating a database table in systems such as Oracle or SQL Server, an option to specify a default value is available. This separates database design issues from the front-end application.
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Default value expressions (C# Programming Guide

Default value expressions are particularly useful in generic classes and methods. One issue that arises using generics is how to assign a default value of a parameterized type T when you don’t know the following in advance:. Whether T is a reference type or a value type.; If T is a value type, whether it’s a numeric value or a struct.; Given a variable t of …
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Default values table (C# Reference) | Microsoft Docs

Use the default value expression to produce the default value of a type, as the following example shows: int a = default(int); Beginning with C# 7.1, you can use the default literal to initialize a variable with the default value of its type:
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Default Values | Understanding C# Types | InformIT

The default value for the char type is the character equivalent of zero and false for the bool type. The object and string types have a default value of null , representing a null reference that literally is one that does not refer to any object.
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SQL DEFAULT Constraint – W3Schools

SQL DEFAULT Constraint. The DEFAULT constraint is used to provide a default value for a column. The default value will be added to all new records IF no other value is specified.
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defaultvalue – msdn.microsoft.com

The latest version of this topic can be found at defaultvalue.. Allows specification of a default value for a typed optional parameter.
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Default (computer science) – Wikipedia

A default, in computer science, refers to the preexisting value of a user-configurable setting that is assigned to a software application, computer program or device. Such settings are also called presets or factory presets , especially for electronic devices.
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PostgreSQL: Documentation: 10: 5.2. Default Values

If no default value is declared explicitly, the default value is the null value. This usually makes sense because a null value can be considered to represent unknown data. In a table definition, default values are listed after the column data type.
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