Computer Science: An OverviewGeneral literature -- Introductory and Survey. |
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Page 345
... relations — one for each of the preceding topics . Thus , we might keep the original relation ( which we now call the EMPLOYEE relation ) as it was and insert the additional information in the form of the two new relations called JOB ...
... relations — one for each of the preceding topics . Thus , we might keep the original relation ( which we now call the EMPLOYEE relation ) as it was and insert the additional information in the form of the two new relations called JOB ...
Page 347
... relation or relations . First note that there will be times when we will need to select certain tuples from a relation . For example , to retrieve the information about an employee we would need to select the tuple with the appropriate ...
... relation or relations . First note that there will be times when we will need to select certain tuples from a relation . For example , to retrieve the information about an employee we would need to select the tuple with the appropriate ...
Page 348
... relation by the JOB relation turns out to be the weapon we need , so let us look at what the product of two relations actually is . First we consider the smaller example of MULTIPLYing a relation A with attributes W and X by a relation ...
... relation by the JOB relation turns out to be the weapon we need , so let us look at what the product of two relations actually is . First we consider the smaller example of MULTIPLYing a relation A with attributes W and X by a relation ...
Contents
Introduction | 1 |
PART ONE Machine Architecture | 19 |
Data Manipulation | 61 |
Copyright | |
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activities actually addition algorithm allow appear application approach assign associated begin binary block called cell Chapter characters collection communication complete consider consists contains contents database described devices discussed employee entry example execution expressed fact field Figure function given identified implemented indicated input insertion instruction involved language linked loop machine machine's major means memory memory cells module move node notation Note object obtain operating system organization original particular pattern perform pivot pointer position problem produce record refers relation represented request result retrieve routine sequence sequential single solution solving sort stack statement step storage stored string structure subprogram Suppose tape task technique terminal translator tree unit write