how to insert,update multipule rows to wcf dataservice from jquery

how to insert,update multipule rows to wcf dataservice from jquery

 I have used only aspx page and javascript. so from page, i want to call jquery ajax method to send more than one row at a time to WCF data service.

data could be of one table or more than one tables, related or non-related.

os there is any documentation exits then pls send me the link with an example.

few people said datajs,js also does it, but I could not open the documentation of the library may be something wrong with the site.

one more thing, thought wcf data services might have described the formate of post data, so that i can formate my data in the given formate in javascript and post it to 

wcf data service using ajax. so a like of wcf dataservices would be help full which could describe the formate of inserted, updated etc data to be posted to the service.