Abstract: Methods, apparatus, and other embodiments facilitate transitioning a database between two modes. The two modes include a mode where table information for separate tables in the database is stored in a single monolithic file and a mode where the table information for separate tables is stored in separate files. Conventional attempts to make this type of transition lock the database for an unacceptable amount of time. Example methods and apparatus make a copy of a database that is to be transitioned, lock the copy, make a second instance of the copy, and then perform the work necessary for the transition in the second instance. This allows the original database to remain running. When the second instance is complete, the second instance is synchronized to the original database and then the transition is completed by copying the second instance to the original or failing the original over to the second instance.

Abstract: Methods, apparatus, and other embodiments associated with performing personal deduplication on a mobile device are described. One example method includes accessing a personal or context sensitive deduplication repository, where the context is based on a time of use of the mobile device, a purpose of use of the mobile device, a location of the mobile device, or an application in use by the mobile device, selectively de-duplicating data arriving at the mobile device, and selectively de-duplicating data to be transmitted by the mobile device, where the deduplication is performed using the personal or context sensitive deduplication repository. Example methods and apparatus may employ a chunking and hashing deduplication approach, a vector deduplication approach, or a delta deduplication approach.

Abstract: Methods, apparatus, and other embodiments associated with performing personal deduplication on a mobile device are described. One example method includes accessing a personal or context sensitive deduplication repository, where the context is based on a time of use of the mobile device, a purpose of use of the mobile device, a location of the mobile device, or an application in use by the mobile device, selectively de-duplicating data arriving at the mobile device, and selectively de-duplicating data to be transmitted by the mobile device, where the deduplication is performed using the personal or context sensitive deduplication repository. Example methods and apparatus may employ a chunking and hashing deduplication approach, a vector deduplication approach, or a delta deduplication approach.

Abstract: Methods, apparatus, and other embodiments facilitate transitioning a database between two modes. The two modes include a mode where table information for separate tables in the database is stored in a single monolithic file and a mode where the table information for separate tables is stored in separate files. Conventional attempts to make this type of transition lock the database for an unacceptable amount of time. Example methods and apparatus make a copy of a database that is to be transitioned, lock the copy, make a second instance of the copy, and then perform the work necessary for the transition in the second instance. This allows the original database to remain running. When the second instance is complete, the second instance is synchronized to the original database and then the transition is completed by copying the second instance to the original or failing the original over to the second instance.