Search results
Results from the WOW.Com Content Network
Database tuning describes a group of activities used to optimize and homogenize the performance of a database.It usually overlaps with query tuning, but refers to design of the database files, selection of the database management system (DBMS) application, and configuration of the database's environment (operating system, CPU, etc.).
Since SQL is declarative, there are typically many alternative ways to execute a given query, with widely varying performance. When a query is submitted to the database, the query optimizer evaluates some of the different, correct possible plans for executing the query and returns what it considers the best option. Because query optimizers are ...
The goal of optimization is therefore either to find the best query plan based on some specification of user preferences provided as input to the optimizer (e.g., users can define weights between different cost metrics to express relative importance or define hard cost bounds on certain metrics) or to generate an approximation of the set of ...
Microsoft SQL Server (Structured Query Language) is a proprietary relational database management system developed by Microsoft.As a database server, it is a software product with the primary function of storing and retrieving data as requested by other software applications—which may run either on the same computer or on another computer across a network (including the Internet).
For example, Microsoft SQL Server comes with SQL Server Management Studio and Oracle has tools such as SQL*Plus and Oracle Enterprise Manager/Grid Control. In addition, 3rd parties such as BMC, Quest Software , Embarcadero Technologies , patchVantage and SQL Maestro Group offer GUI tools to monitor the DBMS and help DBAs carry out certain ...
BIDS Helper is a Visual Studio open source extension with multiple features that extend and enhance business intelligence development functionality in all editions of Microsoft's SQL Server 2005, 2008, 2008 R2 and 2012. [3] [4] BIDS Helper improves the development environment for integration, analysis and reporting services. [5]
The skyline operator is the subject of an optimization problem and computes the Pareto optimum on tuples with multiple dimensions.. This operator is an extension to SQL proposed by Börzsönyi et al. [1] to filter results from a database to keep only those objects that are not worse in multiple dimensions than any other.
Cyberattack Protection: SQL injection is a type of attack used to exploit bad coding practices in applications that use relational databases. The attacker uses the application to send a SQL statement that is composed from an application statement concatenated with an additional statement that the attacker introduces.