MV vs Data F

Memory variable files are a way to store the status of memory variables that are currently stored in memory.
A variable is an identifier (usually a letter, word, or phrase) that is linked to a value stored in the system's memory or an expression that can be evaluated. For instance, a variable might be called "total_count" and contain a number.Depending on the type system of a programming language, variables may only be able to store a specified datatype (e.g. integer or string). Alternatively a data type may be associated only with the current value, allowing a single variable to store anything supported by the programming language.The use of the term "variable" is based on the similar mathematical concept of the same name.
While...

Data field definition usually includes field structure (size of each field and whether it is a date, an integer, or a text field) and field organization (names and locations of data fields within a document record).When adding documents to a Globodox DB you would also want to add descriptive/indexing information along with each document. This information could include data items like Author Name, Title, Subject etc.. Each of these items of data is known as a data field.You can create data fields for Document Types and Stack Types.

When adding a Data Field to a Document Type or Stack Type you will need to specify the Data Type for that field. A field's Data Type specifies the type of data that can be stored in that field.