Database Management systems phần 6 pdf

... (a,2,3,4 ,6) } (d) {(a,2,3,4,5), (2,a,3,4,5), (a,2,3 ,6, 5)} (e) {(a,2,3,4,5), (2,a,3,7,5), (a,2,3,4 ,6) } (f) {(a,2,3,4,5), (2,a,3,4,5), (a,2,3 ,6, 5), (a,2,3 ,6, 6)} (g) {(a,2,3,4,5), (a,2,3 ,6, 5), (a,2,3 ,6, 6), ... dependency theory and its use in database design include [3, 38, 4 36, 443, 65 6]. Good survey articles on the topic include [66 3, 355]. FDs were introduced in [1 56] , al...

Ngày tải lên: 08/08/2014, 18:22

... 1983. [4 76] C. Mohan, B. Lindsay, and R. Obermarck. Transaction management in the R* dis- tributed database management system. ACM Transactions on Database Systems, 11(4):378–3 96, 19 86. 864 Database Management ... Conf. on Very Large Databases, 19 96. [588] L. Shapiro. Join processing in database systems with large main memories. ACM Transactions on Database Systems...

Ngày tải lên: 08/08/2014, 18:22

... tools for relational database management A textual database A set of tools for textual database management Click on your answer 5. Database management systems - 6. Textual databases and cds/isis ... CDS/ISIS database. 5. Database management systems - 6. Textual databases and cds/isis basics – page 1 Information Management Resource Kit Module on Management of Ele...

Ngày tải lên: 31/03/2014, 20:20

... Ha"lhing n.5 Review Questions Part IV QUERY EVALUATION :3 16 317 317 318 320 322 324 324 3 26 327 328 330 331 331 333 338 339 341 344 344 3 46 347 348 352 3 56 358 358 360 363 364 364 370 371 373 373 379 384 385 391 ... good annotated collection of systems- oriented papers on database management. Other texts covering database management systems include [204, 245,...

Ngày tải lên: 29/03/2014, 12:20

... 3.258 4. 166 5.251 6. 266 7.2 56 4 2.230 1.281 2.010 2.8 06 3 .65 9 4.059 5.577 6 543 4-1/2 2.300 1. 564 2.351 3.152 4.905 4. 962 5.907 7 080 5 2.781 1.202 1.893 2 .63 9 3.489 4.339 5.230 6. 461 6 3.313 ... 6. 4 76 7.759 9.179 2 1.188 1.438 2. 367 3.398 4.4 46 5. 561 6. 733 8.027 2-1/2 1.438 1.383 2. 765 3 .65 7 4.737 5.815 7.015 8.195 3 1.750 1.2 86 2.114 2. 968 3.889 4....

Ngày tải lên: 08/08/2014, 15:21

... Text Search 66 3 22.4.1 Inverted Files 66 5 22.4.2 Signature Files 66 6 22.5 Ranked Keyword Searches on the Web 66 7 22.5.1 An Algorithm for Ranking Web Pages 66 8 22 .6 Points to Review 67 1 23 DECISION ... collection of systems- oriented papers on database management. Other texts covering database management systems include [ 169 , 208, 289, 60 0, 499, 65 6, 66 9]. [ 16...

Ngày tải lên: 08/08/2014, 18:22

... Bob 3 63 .5 Figure 4.15 An Instance S3 of Sailors sid bid day 22 101 10/10/98 22 102 10/10/98 22 103 10/8/98 22 104 10/7/98 31 102 11/10/98 31 103 11 /6/ 98 31 104 11/12/98 64 101 9/5/98 64 102 ... for example, [280, 335, 542, 66 2, 69 1]. Pioneering projects include System R [33, 129] at IBM San Jose Research Laboratory (now IBM Almaden Research Center), Ingres [62 8] at the University...

Ngày tải lên: 08/08/2014, 18:22

... queries in Section 6. 2 and consider queries over multiple relations in Section 6. 3. We consider queries with set-difference in Section 6. 4 and queries with aggregation in Section 6. 5. We discuss ... complex constraints in Section 6. 6. We show how additional computed fields can be included in the answer in Section 6. 7. We discuss update operations in QBE in Section 6. 8. Finally, we...

Ngày tải lên: 08/08/2014, 18:22

... problem. 274 Chapter 9 10 20 30 80 35 42 50 65 90 98 ABC 30* 31* 36* 38* 42* 43* 51* 52* 56* 60 * 68 * 69 * 70* 79* 81* 82* 94* 95* 96* 97* 98* 99* 105* L1 L2 L3 L4 L5 L6 L7 L8 I1 I2 I3 100* Figure 9.29 Tree ... buffer pages in the merging passes is illustrated in Figure 11.5. 6, 2 8,7 9,4 3,4 2,3 4,4 6, 7 8,9 1,2 3,5 6 5 ,6 2 3,1 3,4 9,4 6, 2 8,7 Input file 1st output run 2nd outpu...

Ngày tải lên: 08/08/2014, 18:22

... equidepth, respectively. 10 11 12 13 140 2 31 567 89410 11 12 13 140 2 31 567 894 10 11 12 13 140 2 31 567 894 10 11 12 13 140 2 31 567 894 Equidepth 2 .67 1.33 5.0 1.0 5.0 2 .67 1.33 5.0 1.0 5.0 2 .67 1.33 5.0 1.0 5.0 Equiwidth Bucket ... Real systems vary in their catalog schema design, but the catalog is always implemented as a collection of relations, and it essentially describes all...

Ngày tải lên: 08/08/2014, 18:22