An Educational Tool for Formal Relational Database Query Languages
1993 ◽
Vol 4
(2)
◽
pp. 157-184
◽
2015 ◽
pp. 165-180
1989 ◽
Vol 15
(5)
◽
pp. 632-638
◽
Keyword(s):
1990 ◽
Vol 28
(3)
◽
pp. 282-296
1982 ◽
Vol 7
(2)
◽
pp. 164-186
◽
2005 ◽
pp. 283-300
◽
Keyword(s):
Keyword(s):