Information Retrieval System Explained: Types, Comparison & Components

What is the difference between information retrieval and data retrieval?
The following illustrates the differences between information retrieval and data retrieval:
Information Retrieval - Information retrieval deals with the operations like information retrieval, storage, and evaluation of the data. Small errors are neglected. It is an example of a probabilistic model. The final results are not exact and are an approximation. The database user does not get the results.

Data Retrieval - Retrieving the data from the database is called data retrieval. The data retrieval includes identifying and collecting the data from the database. Even a single error can fail the system. It is an example of a deterministic model. The final results are the exact results. The database user gets all the results. The data retrieval system is well structured.
Define user interaction with the IR system?
In the Information retrieval system or IR system, the user first translates the information into a query. The IR system contains a certain set of words that defines the logic to deal with the information.
Earlier, the documents were represented through some keywords or a set of indexes. But it has been modernized and the documents are shown with the whole set of keywords. This can be done with the text operations where the article or connectives are removed/eliminated. This method reduces the complexity of the document as well.