What is data retrival in GIS?

What does data retrieval mean?

Data retrieval means obtaining data from a Database Management System (DBMS) such as ODBMS. In this case, it is considered that data is represented in a structured way, and there is no ambiguity in data. In order to retrieve the desired data the user present a set of criteria by a query.

What is data retrival in GIS?

Data retrieval involves the capability to easily select data for graphic or attribute editing, updating, querying, analysis and/or display. The ability to retrieve data is based on the unique structure of the DBMS and command interfaces are commonly provided with the software.

What is data retrieval example?

Data Retrieval is accomplished through the association of the Target Deployment Port library functions with an execution procedure. The following examples demonstrate the Standard, User, and Breakpoint Modes, based on a simple program which writes a text message to a file named "cNewTdp\\atl.

What is data retrieval and explain its command?

DRL/DSL stands for Data Retrieval Language/Data Selection Language. It is a set commands which are used to retrieve data from database server. It manipulates the data in database for display purpose like aggregate function.