Samsung Electronics Co., Ltd.

Hyeeun Jun

Kisung Lee

Yoonho Shin

Kiwon Song

Woojoong Lee

Hobin Woo

According to an embodiment, an electronic device includes a memory including a database file and at least one processor connected to the memory. The at least one processor may identify damage to the database file while a first application running on the electronic device accesses the database file. The at least one processor may control a second application running on the electronic device to wait without accessing the database file until recovery of the damaged database file is completed. The at least one processor may record recovery state information indicating that the database file is recovered if the recovery of the damaged database file is completed. The at least one processor may control the second application to access the recovered database file based on the recovery state information.

Method for recovering database file in electronic device

An electronic device for recovering a database (DB) and a method of operating the electronic device are provided. The electronic device includes a non-volatile first memory configured to store a DB, a volatile second memory, and a processor operably connected to the first memory and the second memory. The processor may determine whether the DB is corrupted, may perform first integrity check of the DB after initializing a DB cache in which at least a portion of the DB is loaded to a user space of the second memory when it is determined that the DB is corrupted, may perform second integrity check of the DB after initializing an operating system (OS) cache in which at least a portion of the DB is loaded to a kernel space of the second memory when the first integrity check of the DB fails, and may perform a task on a DB file when the first integrity check or the second integrity check of the DB is successful.

Electronic device for recovering database and method of operating the same

Various embodiments of the disclosure disclose a method and an apparatus, which includes: a display, a memory, and a processor operatively connected to the display and/or the memory, wherein the processor is configured to: add a frame to an appended file based on a request to update application data, allocate a reserved space to the appended file, update a database file based on an update condition, and allocate the reserved space to the database file.

Electronic device and method for updating database based on reserved space

An electronic device and a method for operating the electronic device are provided. The electronic device includes a first memory, a second memory configured to store therein journal data including an operation result of a transaction for data in the database and metadata, and at least processor configured to detect an occurrence of the transaction, identify characteristics of a database system to which the data corresponding to the transaction belongs and characteristics of a file system, determine whether to create a thread for synchronizing the metadata stored in the second memory with the first memory based on the characteristics of the file system and the characteristics of the database system, and synchronize the metadata with the first memory using the created thread corresponding to identifying that the transaction of the data satisfies a condition related to a degree of change of time of the data.

Electronic device for prohibiting loss of data in database and method for operating the same

An electronic device according to various embodiments of the present invention comprises: a memory for storing a database and a file which includes at least one change data for changing the database; and a processor electrically connected to the memory, wherein, when terminating the use of the database, the processor can initialize at least one data other than a first validity data, included in a header of the file, for determining the validity of the at least one change data, and, when commencing the use of the database following the termination of the use of the database, the processor can change the first validity data included in the header of the file. Other various embodiments are possible.

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Gyeonggi-do, South Korea

Hyeeun Jun