The server-side database maintains all of the data requiredfor business, and the mobile database downloads copies
ofdata the user needs from the server-side database. Thesynchronization server is located between the two databases
tosynchronize the data and manage additional informationrequired for synchronization. The AnySyn
synchronization server performs synchronization based on the SAMDalgorithm. The synchronization policy is
established in AnySyn, and the load caused by accessing the server-sidedatabase is minimized by operating a
connection pool. Everymobile device uses a separate toolkit to access the AnySyn server over a wired network to
perform synchronization.
BACKGROUND KNOWLEDGE
The existing synchronization solutions of mobile database are not independent from the database server because they use
database dependent information such as metadata or use specific functions of database server such as trigger and time stamp.
These constraints are critical weak point in cloud environment because various applications are running in various devices and
servers in ubiquitous environment. Therefore, there is must need synchronization algorithms of mobile database which is
independent of the vender of synchronization solution and mobile database in cloud environment. This paper suggests SAMD
(Synchronization Algorithms based on Message Digest) in order to resolve the problems mentioned above. SAMD resolves
synchronization problems using only standard SQL queries as certified by the ISO (International Organization for
Standardization). This is followed by a possible synchronization of any data combination regardless of the kind of database of
server side or mobile database. In conclusion, the SAMD is effective solution for mobile database synchronization in cloud
environment.
Keywords: SAMD, MDV, DSDT, MCDT.
The server-side database maintains all of the data requiredfor business, and the mobile database downloads copies
ofdata the user needs from the server-side database. Thesynchronization server is located between the two databases
tosynchronize the data and manage additional informationrequired for synchronization. The AnySyn
synchronization server performs synchronization based on the SAMDalgorithm. The synchronization policy is
established in AnySyn, and the load caused by accessing the server-sidedatabase is minimized by operating a
connection pool. Everymobile device uses a separate toolkit to access the AnySyn server over a wired network to
perform synchronization.
BACKGROUND KNOWLEDGE
The existing synchronization solutions of mobile database are not independent from the database server because they use
database dependent information such as metadata or use specific functions of database server such as trigger and time stamp.
These constraints are critical weak point in cloud environment because various applications are running in various devices and
servers in ubiquitous environment. Therefore, there is must need synchronization algorithms of mobile database which is
independent of the vender of synchronization solution and mobile database in cloud environment. This paper suggests SAMD
(Synchronization Algorithms based on Message Digest) in order to resolve the problems mentioned above. SAMD resolves
synchronization problems using only standard SQL queries as certified by the ISO (International Organization for
Standardization). This is followed by a possible synchronization of any data combination regardless of the kind of database of
server side or mobile database. In conclusion, the SAMD is effective solution for mobile database synchronization in cloud
environment.
Keywords: SAMD, MDV, DSDT, MCDT.
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