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Line 28: ==Data keys and values, structures and persistence== Keys in data provide the context for values. Regardless of the structure of data, there is always a key component present. Keys in data and data-structures are essential for giving meaning to data values. Without a key that is directly or indirectly associated with a value, or collection of values in a structure, the values become meaningless and cease to be data. That is to say, there has to be a key component linked to a value component in order for it to be considered data.{~~[[Skilgenie.com]]~~{cn\|date=August 2021}} Data can be represented in computers in multiple ways, as per the following examples:

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