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Data can appear to have changed in format but remain fundamentally unchanged if the underlying information and the relationships between the different pieces of data remain the same. This means that the content and context of the data remain the same, but the way it is organized or presented may have changed. For example, a spreadsheet of sales data may change in format from a table to a chart, but the data points and relationships between them remain the same. Similarly, a text document may change in format from a PDF to a Word file, but the content and context of the information remain unchanged. In both cases, the data is still fundamentally the same, even though it appears different in format.