By Ellen O’Brien – As the researcher credited with driving IBM Corp.’s federated database technology, engineer Laura Haas has led data management projects from the Garlic project to DiscoveryLink and, most recently, to the DB2 Information Integrator (DB2 II). She spoke with SearchDatabase.com about
(Joe McKendrick) IBM estimates that about 70 percent of the world’s data resides on mainframes. That means there are more terabytes of data sitting in DB2 and IMS database files – storing years of customer and supplier history, transactions, and market data – than in all other databases combined.
By Lisa Gill – A highly competitive market has emerged in the rapidly growing networked storage industry, ruled by EMC, which claims 30 percent of SAN, or storage area network, market share. Why is data storage such a big business, and what lies ahead for EMC and its rivals?
These questions are similar to what you can expect during a real interview. Being prepared will enable you to think on your feet. The suggested replies aren’t intended to give you one correct answer. Rather, the answers should reflect your personal frame of reference, based on your motives, goals, w
By Robert Vamosi – Let there be no doubt that script kiddies–inexperienced malicious programmers–have taken up the once lowly skill of virus writing. Goner’s (w32.Goner.A@mm) pop-up displays look like a typical script kiddie Web-site defacement, complete with the typical script kiddie “greetz.” Be
During my years as a database developer I have often faced the task of finding and deleting duplicate data in a database. Duplicates impact data accuracy and credibility, and they can also affect database performance if they’re too numerous compared to the total number of rows in the table. The solu
Latch is a low level locking mechanism provided by oracle. In this article we will look at the latch concept and how to tune the server to reduce latch contention. Check out it out here.
Tip from Jeffrey Tarnok and Sai Casulas – Triggers are often employed to handle pre and post-data manipulation language (DML) processing and can be used to facilitate complex constraint requirements. Oracle supports the use of Java in the database as a non-proprietary, powerful programming language.
(Boris Milrud) The "ORA-01555 snapshot too old" error, which causes user transactions to fail, is a nightmare for Oracle DBAs and developers. It usually occurs after queries or batch processes have been running for a long time, which means that it can cause you to lose many hours of processing.
By Kieren McCarthy – According to various UK media sources today, the buzzwords said to trigger the US, UK, Canada, New Zealand spying mechanism Echelon have been "posted on the Internet". We haven’t found the file and it hasn’t popped up on the authoritative site for these sorts of things, Cryptome