Information
The topic you requested is included in another documentation set. For convenience, it's displayed below. Choose Switch to see the topic in its original location.

IndexedDB objects

The IndexedDB API consists of several objects, each designed for specific tasks. Each object is listed here:

  • Data is stored in object stores, which are collections of JavaScript objects whose attributes contain individual values.
  • Each JavaScript object, sometimes called a record, in an object store has a common attribute called a key path; the value of this attribute is called a key value (or key). Key values uniquely identify individual records within an object store.
  • An index organizes objects according to the value of a common attribute. Indexes return sets of key values that can be used to obtain the individual records from the original object store.
  • A cursor represents a set of values. When an index defines a cursor, the cursor represents the set of key values returned by the index. When an object store defines a cursor, the cursor represents a set of records stored in the cursor.
  • A keyRange defines a range of values for an index or a set of records in an object store; key ranges allow you to filter cursor results.
  • A database contains the object stores and indexes; databases also manage transactions.
  • A request represents individual actions taken against objects in a database. For example, opening a database leads to a request object and you define event handlers on the request object to react to the results of the request.
  • A transaction manages the context of operations and is used to maintain the integrity of database activities. For example, you can create object stores only in the context of a version change transaction. If a transaction is aborted, all operations within the transaction are canceled.

Related topics

Indexed Database API ("IndexedDB")
Internet Explorer 10 Guide for Developers

 

 

Show:
© 2014 Microsoft