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Code Access Security from the Perspective of a Developer and Administrator
Code Access Security represents a fundamentally different way of controlling access rights to protected resources. Traditionally, permissions such as access to the file system, databases or network were allocated based on characteristics of the user. All processes executed by the user would assume a
Modernizing iSeries Application Data Acess – a Roadmap Cornerstone
(Hernando Bedoya, Daniel Cruikshank, Birgitta Hauser, Sharon Hoffman, Rolf Andre Klaedtke and Warawich Sundarabhaka) In 1978 IBM introduced the System/38 as part of its midrange platform hardware base. One of the many outstanding features of this system was the built in Relational Database Managemen
Enhanced Interactive Python with IPython
(Jeremy Jones) Python is a multipurpose programming language: it is object oriented, is dynamic, can accomplish much in few lines of code, is syntactically clean and elegant, “fits the brain well,” and is an excellent language for programmers of all ages and skill levels. These characteristics have
Tracing Enhancements in ASP.NET 2.0
(Saravana Kumar) Tracing is the new feature introduced in ASP.NET 1.x. This feature is used to track application execution flow which can be used for diagnosing problems in production environment. Tracing also provides other details like Session Details, View State details and debugging messages emi
Heterogeneous database replication with SyncML
(Jayanthi Suryanarayana and Neil Tunnicliffe) Availability and performance are primary considerations when you’re developing distributed applications. But using data stores to address these concerns can result in problems with data synchronization between heterogeneous data stores. This article
Using a Subquery in a T-SQL Statement
(Gregory A. Larsen) Sometimes the criteria for determining which set of records will be affected by a SELECT, UPDATE, DELETE and/or INSERT statement cannot be obtained by hard coding the selection criteria. Occasionally there is a need to use the results of a SELECT statement to help determine which
FIX: You receive a 17883 error message and SQL Server 2000 may stop responding to other requests when you perform large in-memory sort operations
When you perform large in-memory sort operations in Microsoft SQL Server 2000, SQL Server may not yield to the SQL Server User Mode Scheduler (UMS). This behavior could lead to stalled worker requests. When this problem occurs, connection timeouts and other time-sensitive operations may fail. When t
Identify Prime Numbers
(Sandesh Mali) This query checks for prime numbers up to square of the ROWNUM in the ALL_TAB_COLUMNS table.
SIMILE: Practical Metadata for the Semantic Web
(Stefano Mazzocchi, Stephen Garland and Ryan Lee) Browsing digital libraries today can be a difficult process of navigating through different interfaces and different terminologies for each collection visited. The SIMILE Project is working to make it easier to wander from collection to collectio