An Introduction to Database Systems 8Ed - C J Date - Solutions Manual Episode 2 Part 1 pps

An Introduction to Database Systems 8Ed - C J Date - Solutions Manual Episode 1 Part 1 pot

... 14 . Semantic Modeling Part IV : Transaction Management 15 . Recovery 16 . Concurrency Copyright (c) 2003 C. J. Date page fm.5 ã Read Chapters 3 and 4 very carefully. ã Read Chapters ... C. J. Date Copyright (c) 2003 C. J. Date page fm.4 Part V : Further Topics 17 . Security 18 . Optimization 19 . Missing Information 20. Type Inheritance 21. Distributed Databases ... legacy," and The Third Manifesto does include some specific Copyright (c) 2003 C. J. Date page 1. 4 them (they really aren't very difficult). Of course, the exercises can be skipped...

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An Introduction to Database Systems 8Ed - C J Date - Solutions Manual Episode 1 Part 2 potx

... deliberate, and so is the lack of reference to the ACID acronym.) Superficial!──this is just an introduction. Forward references to Chapters 15 and 16 . 3.9 The Suppliers-and-Parts DB ... is added to the CELLAR table. Copyright (c) 20 03 C. J. Date page 2. 3 both source and object form, in the dictionary). A comprehensive dictionary will also include cross-reference information, ... retrieve all required stored record occurrences; next, construct the required conceptual record occurrences; finally, construct the Copyright (c) 20 03 C. J. Date page 3.5 ( EMP WHERE EMP#...

An Introduction to Database Systems 8Ed - C J Date - Solutions Manual Episode 1 Part 3 pdf

... CS_SC ; EXEC SQL OPEN CJ ; DO for all J rows accessible via CJ ; EXEC SQL FETCH CJ INTO :CJ _J# , :CJ_JN, :CJ_JC ; print CJ _J# , CJ_JN, CJ_JC ; END DO ; EXEC SQL CLOSE CJ ; END DO ; EXEC SQL ... SELECT S.S#, S.SNAME, S.STATUS, S.CITY FROM S ORDER BY S# ; EXEC SQL DECLARE CJ CURSOR FOR SELECT J. J#, J. JNAME, J. CITY FROM J WHERE J. J# IN ( SELECT SPJ .J# FROM SPJ WHERE SPJ.S# = :CS_S# ... Copyright (c) 20 03 C. J. Date page 4 .10 Java──because cursors in SQLJ are replaced by Java "iterator objects" that can be stacked in recursive calls (thanks to an anonymous reviewer...

An Introduction to Database Systems 8Ed - C J Date - Solutions Manual Episode 1 Part 4 pptx

... covered) Read-only vs. Update Operators The distinction between read-only and update operators──another logical difference!──becomes particularly important when we get to inheritance ... fact a scalar update operator specifically, and might object, correctly, that scalar update operators aren't part of the relational model. The discussion of such operators in this chapter ... here, which makes a purely syntactic distinction between operator and function. To be specific, SQL uses function to mean an operator that's invoked by means of classical functional notation──or...

An Introduction to Database Systems 8Ed - C J Date - Solutions Manual Episode 2 Part 1 pps

... 13 .2 MVDs and 4NF Mostly self-explanatory. Possible points for the instructor to note: Copyright (c) 20 03 C. J. Date page 12 . 19 12 . 7 NADDR is in 2NF but not 3NF (and hence not BCNF). ... or even just to BCNF, can unfortunately be in conflict.) Copyright (c) 20 03 C. J. Date page 12 . 15 is at all times equal to a projection of the join of EMP3 and PHONE3 and OFFICE3. Observe ... 12 . 13 However, JOB2A is a projection of SALHIST2 (see below), and JOB2B is a projection of EMP1 (renamed as EMP2 below), so both of these relvars can be discarded. SALHIST1: As with JOB1,...

An Introduction to Database Systems 8Ed - C J Date - Solutions Manual Episode 2 Part 2 pot

... SPJ { S#, P# } JOIN SPJ { P#, J# } JOIN SPJ { J# , S# } ; Calculus version: CONSTRAINT SPJ_JD SPJ = { SPJX.S#, SPJY.P#, SPJZ .J# } WHERE SPJX.P# = SPJY.P# AND SPJY .J# = SPJZ .J# AND SPJZ.S# ... CTXD1.COURSE = CTXD2.COURSE AND CTXD1.TEACHER = CTXD2.TEACHER AND CTXD1.TEXT = CTXD2.TEXT ) AND ( NOT EXISTS ( SELECT DISTINCT COURSE, TEACHER, TEXT FROM ( ( SELECT DISTINCT COURSE, TEACHER ... Copyright (c) 20 03 C. J. Date page 13.9 CONSTRAINT CTX_MVD CTX = CTX { COURSE, TEACHER } JOIN CTX { COURSE, TEXT } ; Calculus version: CONSTRAINT CTX_MVD CTX = { CTXX.COURSE, CTXX.TEACHER,...

An Introduction to Database Systems 8Ed - C J Date - Solutions Manual Episode 2 Part 3 potx

... T1-T3-T2 : A = 2 T2-T1-T3 : A = 1 T2-T3-T1 : A = 2 Copyright (c) 20 03 C. J. Date page V .2 *** End of Introduction to Part V *** Copyright (c) 20 03 C. J. Date page 16.10 Copyright ... U1, U2, U3, again not necessarily in that order.) Ri-Rj-Rk-Up-Uq-Ur : 3 * 2 * 1 * 3 * 2 * 1 = 36 possibilities Ri-Rj-Up-Rk-Uq-Ur : 3 * 2 * 2 * 1 * 2 * 1 = 24 possibilities Ri-Rj-Up-Uq-Rk-Ur ... the schedule R1-R3-U1-U3-R2-U2 is serializable (it's equivalent to the serial schedule T1-T 3- T2), but it cannot be produced if T1, T2, and T3 all obey the two-phase locking protocol....

An Introduction to Database Systems 8Ed - C J Date - Solutions Manual Episode 2 Part 4 ppsx

... into internal form 2. Convert to canonical form 3. Choose candidate low-level procedures 4. Generate query plans and choose the cheapest In practice, Stage 1 effectively becomes "convert ... different access paths to be deployed (physical data independence). Commercial optimizers do a Copyright (c) 20 03 C. J. Date page 18 .2 reasonably good job on the second aspect* but, strangely, ... and object/relational systems on these ideas? See Chapter 26 , Section 26 .4. See also the Copyright (c) 20 03 C. J. Date page 18.3 and many others. See Appendix A for further discussion....

An Introduction to Database Systems 8Ed - C J Date - Solutions Manual Episode 2 Part 5 pdf

... operators specifically. OPERATOR ROTATE ( T RECTANGLE ) UPDATES T VERSION ROTATE_RECTANGLE ; Copyright (c) 20 03 C. J. Date page 21 .5 Recovery control: Explain two-phase commit very carefully──the ... are clearly more colored circles than there are circles. And colored circles can't be obtained from circles via S by C, either. Note the remark to the effect that "COLORED_CIRCLE ... shown in Fig. 20 .1 is PLANE_FIGURE, of course. 20 .5 22 (this count includes the empty hierarchy). 20 .6 Since all rectangles are centered on the origin, a rectangle ABCD can be uniquely...

An Introduction to Database Systems 8Ed - C J Date - Solutions Manual Episode 2 Part 6 pot

... the introductory remark: (Begin quote) The "views" mentioned in the titles of references [22 . 3 -2 2. 5], [22 .10], [22 . 12] , [22 . 16] , [22 .25 ], [22 .28 ], [22 .30], and [22 .35] are not ... Copyright (c) 20 03 C. J. Date page 21 .7 21 .3 See Section 21 .2. 21 .4 See Section 21 .4. 21 .5 See Section 21 .4. 21 .6 No answer provided. 21 .7 No answer provided. 21 .8 No answer ... Decision Support Self-explanatory. Observe in particular: Copyright (c) 20 03 C. J. Date page 22 .8 22 . 12 No answer provided. *** End of Chapter 22 *** Copyright (c) 20 03...

An Introduction to Database Systems 8Ed - C J Date - Solutions Manual Episode 2 Part 7 doc

... 24 .6 .23 RES ( c1 , c2 ) *═ SPJ ( s, p, j, q ) AND S ( s, sn, st, c1 ) AND J ( j, jn, c2 ) ? *═ RES ( c1 , c2 ) 24 .6 .24 RES ( p ) *═ SPJ ( s, p, j, q ) AND S ( s, sn, st, c ) AND J ( j, ... jn, c ) ? *═ RES ( p ) 24 .6 .25 Can't be done without negation. 24 .6 .26 RES ( p1, p2 ) *═ SPJ ( s, p1, j1 , q1 ) AND SPJ ( s, p2, j2 , q2 ) ? *═ RES ( p1, p2 ) 24 .6 .2 7 -2 4.6.30 Can't ... applicability of object concepts and technology to database management specifically. Please understand, therefore, that all remarks made in this chapter concerning object concepts and technology...

An Introduction to Database Systems 8Ed - C J Date - Solutions Manual Episode 2 Part 8 doc

... that Copyright (c) 20 03 C. J. Date page 25 .14 hierarchies at all, consisting of an "SP" class, a "PJ" class, and a "JS" class. 25 . 12 The performance factors ... and G by C are supported, type constraints are supported too, and noncircular circles and the like can't occur. (And run-time type errors specifically can occur only in the context of ... well-defined boundary that encapsulates state and behavior; an instance of a class Instance: A concrete manifestation of an abstraction; an entity to which a set of operations can be applied and...

An Introduction to Database Systems 8Ed - C J Date - Solutions Manual Episode 2 Part 9 pps

... isn't well-formed if it involves (say) a left -to- right ordering to its attributes; if it involves a left -to- Copyright (c) 20 03 C. J. Date page 27 .20 explanation). In XML Schema, by contrast, ... <ProjectTuple> <JNUM> ;J7 </JNUM> <JNAME>Tape</JNAME> <CITY>London</CITY> </ProjectTuple> Copyright (c) 20 03 C. J. Date page 27 .3 To repeat, ... </ProjectTuple> <ProjectTuple> <JNUM> ;J3 </JNUM> <JNAME>OCR</JNAME> <CITY>Athens</CITY> </ProjectTuple> <ProjectTuple> <JNUM> ;J4 </JNUM>...

An Introduction to Database Systems 8Ed - C J Date - Solutions Manual Episode 2 Part 10 pps

... C. J. Date page D.6 D.11 Values recorded in index Expanded form 0 - 2 - Ab Ab 1 - 3 - cke Acke 3 - 1 - r Ackr 1 - 7 - dams,T+ Adams,T+ 7 - 1 - R Adams,TR 5 - 1 - o Adamso 1 - 1 - l ... Discuss data independence Copyright (c) 20 03 C. J. Date page D.4 yet be no records that actually hash to h2 as such. In other words, the collision-handling technique itself can lead to ... XML document in their "document order"; those Copyright (c) 20 03 C. J. Date page 27 .27 27 .29 This writer is aware of no differences of substance──except that the hierarchic model...

An Introduction to Database Systems 8Ed - C J Date - Solutions Manual Episode 2 Part 11 potx

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