ZMath The database contains bibliographic records (with abstracts) of mathematical literature (mainly journal articles) and partly statistics (since 1931)
Also contains Eram
(Electronic Research Archive for Mathematics) with bibliographic records of mathematical literature from the years 1868-1942 which have been recorded in "Jahrbuch über die Fortschritte der Mathematik"
MathSciNet
: Mathematical reviews, current mathematical publications
The Database contains bibliographic records (with abstracts, mainly journal articles) of mathematics, computer science and statistics (from 1940 on)
ViFaMath - Virtual Library of Mathematics Simultaneous search for literature in libraries, online available articles, tables of contents of academic journals, reviews of the Zentralblatt MATH and for internet sites covering mathematics
MathEduc The database contains bibliographic records (with abstracts) of the didactics of mathematics
Fis Bildung Literaturdatenbank German Education Index. - Contains bibliographic records from all fields of educational sciences and specialized didactics. Report period: 1980 -
IDM Datenbank Database of Institut für Didaktik der Mathematik of Bielefeld University. The database contains records of more than 15,000 documents and materials on mathematical education, preferential "grey" literature from research, administration and practice
Landesdatenbank NRW "A database which contains official statistical data in great detail. Its content is continuously enlarged. The tables provided can be retrieved free of charge and be adjusted to the individual needs of users"