When talking about XML databases, developers often refer to two concepts: databases that store XML data, and DBMS of XML databases. The majority of important DBMS products promise that you can integrate XML data into programs without changing existing databases. When talking about XML databases, developers often refer to two concepts: databases that store XML data, and DBMS of XML databases. The majority of important DBMS products promise that you can integrate XML data into programs without changing existing databases. Now let's discuss the XML database and its features.
Original XML database
An original XML database (NXD) can be very simple or complex. I define the concept of a database as follows: permanent data aggregation. Under such a definition, an NXD can logically store an XML document. When XML: DB initiative has more requests for a NXD, I think the above definition can also be met.
Obviously, data aggregation is stored in XML format. If it is stored in a flat file, it will satisfy our definition of NXD: permanent stable data aggregation.
An NXD application uses the same method to store XML documents (such as flat files, relational databases, level databases, and object databases ).
Flat file
A simple flat file is the most simple XML database model. As a "variant", you can store many XML documents at a directory level. To expand the previous model, let's look at the following model:
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