What is data retrieval in GIS?

Question

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 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 retrieval function in GIS?

Retrieval involves the selective search, manipulation, and output of data without the requirement to modify the geographic location of the features involved. Reclassification involves the selection and presentation of a selected layer of data based on the classes or values of a specific attribute, e.g. cover group.

What is GIS data querying and retrieval?

Geographic Information Retrieval and Spatial Querying. Geographic information retrieval (GIR) is concerned with providing access to geo-referenced information sources. This phrase is intended to convey a specialization of the term Information Retrieval (IR).

What are the data retrieval methods?

17.5.(1) Retrieval without using an index.(2) Retrieval using one index.(3) SELECT-APSL.(4) Retrieval using a multicolumn index.(5) Retrieval of work tables.(6) Retrieval using row identifier.(7) Retrieval of the result of queries to foreign servers.Types of retrieval methods

Expert · Answer