There are a few guidelines of creating meta data. We must see that tags that we create should be inside the if it is a webpage.
Also we need to provide meta data in pairs of name and values.
Meta data is of two types, one which gives information such as where the data is stored, location and data containers. This is called structural Meta data.
Other one gives in depth information about the actual content of the data. this is called descriptive metadata.
Metadata in Database:-
Metadata is stored in a database and is often referred to as as metadata repository.
Meta data is often stored as XML files.
For webpages we have Meta tags like that are metadata and give information about content of the webpage. These meta-tags will have Keywords and Descriptions when it was created etc. Browsers will use this metadata to search and display this webpage .