School libraries belonging to the ELTE library network catalogue their documents in various databases. While maintaining these systems, the ELTE University Library and Archives developed a common search interface in 2011 within the framework of the TÁMOP-3.2.4/09/1/KMR-2010-0021 project, which can be accessed directly at https://gimikatalogus.elte.hu. It is also possible to access the common catalogue of ELTE libraries by clicking on the marked menu item:
The records of the libraries in the database:
- Library of the ELTE Apáczai Csere János Secondary School and College (14 293 records),
- Library of the ELTE Gyertyánffy István Primary School (26 193 records),
- Library of ELTE Radnóti Miklós Primary and Secondary School (31 785 records),
- Library of ELTE Trefort Ágoston Secondary School (31 011 records).
The conversion of school library databases is regular. Once a year, usually in November, the data are updated to reflect changes (additions and deletions) from the previous year.