user query

См. также в других словарях:

• Query string — In the World Wide Web, a query string is the part of a URL that contains data to be passed to web applications such as CGI programs.When a web page is requested via the Hypertext Transfer Protocol, the server locates a file in its file system… …   Wikipedia

• Query expansion — (QE) is the process of reformulating a seed query to improve retrieval performance in information retrieval operations. [cite journal last = Vectomova | first = Olga | coauthors = Wang, Ying | year = 2006 title = A study of the effect of term… …   Wikipedia

• Query by Example — (QBE) is a database query language for relational databases. It was devised by Moshè M. Zloof at IBM Research during the mid 1970s, in parallel to the development of SQL. It is the first graphical query language, using visual tables where the… …   Wikipedia

• Query by humming — (QbH) is a music retrieval system that branches off the original classification systems of title, artist, composer, and genre. It normally applies to songs or other music with a distinct single theme or melody. The system involves taking a user… …   Wikipedia

• User-defined function — A User Defined Function, or UDF, is a function provided by the user of a program or environment, in a context where the usual assumption is that functions are built into the program or environment.BASIC languageIn some old implementations of the… …   Wikipedia

• query language — ▪ computer science       a computer programming language used to retrieve information from a database.       The uses of databases are manifold. They provide a means of retrieving records or parts of records and performing various calculations… …   Universalium

• Query Throughput — In Computer Science, Query Throughput (QthD) is a measurement used to determine the performance of a database system. The throughput metric is a classical throughput measure characterizing the ability of the system to support a multi user… …   Wikipedia

• Query plan — A query plan (or query execution plan) is a set of steps used to access or modify information in a SQL relational database management system. This is a specific case of the relational model concept of access plans.Since SQL is declarative, there… …   Wikipedia

• query language —    In a database management system, a programming language that allows a user to extract and display specific information from a database.    Structured Query Language (SQL) is an international database query language that allows the user to… …   Dictionary of networking

• User Programmatic Interface — In computing, the User Programmatic Interface (UPI), also known as the User Program Interface, consists of a set of C language software APIs which provide the lowest level API based interface to the Oracle database.OverviewUPI offers a procedural …   Wikipedia

• Query By Example —    (QBE)    A data base front end that requests the user to supply an example of the type of data to be retrieved …   IT glossary of terms, acronyms and abbreviations