Saving Data on Android

Understanding Content URIs
To find the data within the provider, use a 
content URI
. The content URI is 
essentially the address of where to find the data within the provider. A content URI 
always starts with 
content://
 and then includes the 
authority
 of a provider which 
is the provider's symbolic name. It can also include the names of tables or other 
specific information relating the query. An example content URI for the user 
dictionary looks like:
content:
//user_dictionary/words
Oftentimes, providers allow you to append an ID value to the end of the URI to find a 
specific record, or a string such as 
count
 to denote that you want to run a query that 
counts the number of records. You must refer to the provider documentation to 
figure out what a specific content provider exposes.