We are most grateful to Jeffrey D.Ullman and Jennifer Widom, the authors of the book
"A First Course in Database Systems", where great part of the learning-stage's exercises were taken from.
We are also thankful to
V.I. Gershovich, O.Yu. Muraveiko, K.S. Kuvalkin, M.R. Yuldashev, A.V. Maltsev, Ilya Makarov, D.S.Glazyrin,
N.V. Yakutin, D.A. Novikov, S.V. Larichev, I.V. Murashkin, Yu.V. Radar, P.G.Zotov, S.G.Polyakov,
V.G. Mikhailov, D.L. Zverev, P.E. Voinov, N.V. Karasyova, V.V. Pechatnov, V.M. Nikotin, A.V.Gorbunov,
D.I. Valuev, S.A. Ledenev, R.S. Golubin, Yu.V. Rozhok, S.A. Sal'nikov, A.N. Drozdkov, A.A.Sribnyak,
A.B. Ostapchuk, P.A. Kurochkin, V. Vanin, V. Chobitok, V.A.Dvoryaninov, R.N.Yunusov, E.A.Krasovskiy,
S. Pyrkin, A.V. Deev, D.N. Chebykin, А.Yu. Bezhayev, A.B.Petrov, M.N.Utenkov, D.L.Grinkevych,
S.A. Kukushkin, D.S. Miheev, D. Boiko, V.S. Maslyayev, A.V.Fomichev, D.V.Filippkin, V.V.Koptel'tsev,
N.G. Latyntsev, A.V.Kostomarov, E.P. Shuravin, N.O. Pryadkina, V.N.Doschenko, I.N.Shkaredny, D.V.Chernov
for their contribution in exercises development.
We also thank:
Y.N. Logvinov, Yu. Bobreshov, D.A. Konakov, N.I. Kurbanoff, V. Piskovoy,
V.B. Rubanchick, V.B. Pasechnikov, M. Chernyshova, T.P. Semerenko, I. Pukhtin,
N.A. Semyonov, A.N. Victorov, A. Khatlamajian, V.N. Usik, R. Romanov,
A. Belozerov, Yu. Simonenko, A. Afonasov, E. Mudrov, T. Velykyy,
N.S. Vinogradov, S.Maximenko, M. Tereschenko, D.V. Pusev
for their assistance in constructing, hosting and developing of this site. Postal address: SQL-EX PO box 6001, Rostov-on-Don, Russia, 344101
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