Kochhar, N., & Gravina, E. (1998). Intoduction to Oracle:SQL and PL/SQL: Student guide. ORACLE SOFTWARE INDIA LIMITED.
Tohutoru Kātū Chicago (17th ed.)Kochhar, Neena, me Ellen Gravina. Intoduction to Oracle:SQL and PL/SQL: Student Guide. ORACLE SOFTWARE INDIA LIMITED, 1998.
Tohutoro MLA (9th ed.)Kochhar, Neena, me Ellen Gravina. Intoduction to Oracle:SQL and PL/SQL: Student Guide. ORACLE SOFTWARE INDIA LIMITED, 1998.
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