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Relational Databases and Knowledge BasesA database management system (DBMS), or simply database system, is characterized by the data model it suports . The first DBMSs, designed in the 1960s, were based on hierarchical or network models and have been viewed as extensions of file systems in which interfile links are provided through pointers . The data manipulation languages of these... | | | | Computational Physics: Fortran VersionComputational Physics is designed to provide direct experience in the computer modeling of physical systems. Its scope includes the essential numerical techniques needed to "do physics" on a computer. Each of these is developed heuristically in the text, with the aid of simple mathematical illustrations. However, the real value... |
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| | Encyclopedia of Civil War ShipwrecksOn the evening of February 2, 1864, Confederate Commander John Taylor Wood led 250 sailors in two launches and twelve boats to capture the USS Underwriter, a side-wheel steam gunboat anchored on the Neuse River near New Bern, North Carolina. During the ensuing fifteen-minute battle, nine Union crewmen lost their lives, twenty were wounded,... | | |
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