The cmp() method of the IDBFactory interface compares two values as keys to determine equality and ordering for IndexedDB operations, such as storing and iterating.
The databases method of the IDBFactory interface returns a Promise that fulfills with an array of objects containing the name and version of all the available databases.
The deleteDatabase() method of the IDBFactory interface requests the deletion of a database. The method returns an IDBOpenDBRequest object immediately, and performs the deletion operation asynchronously.
The open() method of the IDBFactory interface requests opening a connection to a database.
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The
IDBFactoryinterface of the IndexedDB API lets applications asynchronously access the indexed databases. The object that implements the interface is window.indexedDB. You open — that is, create and access — and delete a database with this object, and not directly with IDBFactory.MDN Reference