Gap-Joo Na

Learn More
—Unlike database tables, B þ-tree indexes are hierarchical and their structures change over time by node splitting operations, which may propagate changes from one node to another. The node splitting operation is difficult for the basic In-Page Logging (IPL) scheme to deal with, because it involves more than one node that may be stored separately in(More)
Recently, flash memory(in particular, NAND) is being rapidly deployed as data storage for mobile platforms such as PDAs, MP3 players, mobile phones and digital cameras, mainly because of its many advantages over its competitor, hard disk, including its low electronic power, non-volatile storage, high performance, physical stability, smaller size, light(More)
In the era of the Internet, more and more privacy-sensitive data is published online. Even though this kind of data are published with sensitive attributes such as name and social security number removed, the privacy can be revealed by joining those data with some other external data. This technique is called joining attack. Among many techniques developed(More)
  • 1