Advanced Database Technology and Design phần 3 doc
Advanced Database Technology and Design phần 3 doc
... in the database
were all temporal, many relations that could be derived from that database
140 Advanced Database Technology and Design
2. This term, proposed and defined precisely in [3] , is ... Edinburgh,
Scotland, 19 93, pp. 33 3 34 6.
[57] Ceri, S., et al., Automatic Generation of Production Rules for Integrity Mainte-
nance, ACM Trans. on Database Systems, Vol. 19, N...
Advanced Database Technology and Design phần 2 doc
... and
the fourth the column number.
50 Advanced Database Technology and Design
If Sally is processed before Tom, the constraint is never violated, no rule
actions are executed, and both Sally and ... Section 3. 6 tackles the maintenance of
rule sets.
62 Advanced Database Technology and Design
An external schema is a form of representation of the state of the
domain us...
Advanced Database Technology and Design phần 10 doc
... also Verification and validation tools
Fourth normal form (4NF), 469
Fragmentation, 30 14
advantages, 30 3
disadvantages, 30 34
horizontal, 30 1 3
hybrid, 30 2, 30 3
vertical, 30 2, 30 3
Functional dependency ... 26165
Administration
DBA, 36 061
delegation, 36 1
joint, 36 2
object curator, 36 1
object-owner, 36 1
policies, 36 062
policy taxonomy, 36 3
tools, 4 43
tra...
Advanced Database Technology and Design phần 1 ppsx
... Bibliography 57
Part II: Advanced Technologies 59
3 Active Databases 61
3. 1 Introduction 61
3. 2 Example: University Database 63
3 .3 Analysis 64
3. 3.1 Recovering Business Policies 64
3. 3.2 Causal Business ... Concepts 35 4
11.2.2 Access Control Policies 35 5
11.2 .3 Administration Policies 36 0
11 .3 Discretionary Access Control Models and Systems 36 2
11 .3. 1 Authori...
Advanced Database Technology and Design phần 4 potx
... single interval.
164 Advanced Database Technology and Design
•
i1 DURING i2 is true if and only if s2 ≤ s1 and e2 ≥ e1 are both
true.
9
•
i1 STARTS i2 is true if and only if s1 = s2 and e1 ≤ e2 are ... its single operand and returns another such set. The result in
both cases can be regarded as a particular canonical form for the original set.
160 Advanced Database Tec...
Advanced Database Technology and Design phần 5 pptx
... involved in
232 Advanced Database Technology and Design
Conceptual
design
UML notation
Standard design
ODL
Implementation
design
OODBMS
Figure 7 .3 Design process of an object-oriented database schema.
For ... the requirements that will
feed an MM-DBMS design. We emphasize the structural complexity and
254 Advanced Database Technology and Design
7.2.1 Object...
Advanced Database Technology and Design phần 6 ppt
... balance
100 2000
1 23 300
130 −200
400 0
5 63 −5670
888 30
987 −90
S
2
accno balance
100 2000
1 23 300
130 −200
S
1
accno name
100 Anne
1 23 Bob
130 Carla
S
2
accno name
400 David
5 63 Emily
888 Fred
987 ... and Design
accno name balance
100 Anne 2000
1 23 Bob 30 0
130 Carla −200
400 David 0
5 63 Emily −5670
888 Fred 30
987 George −90
S
c
Figure 9 .3 Distribution of the a...
Advanced Database Technology and Design phần 7 pps
... the bandwidth for the downlink
communication (from servers to clients) is much greater than the bandwidth
33 6 Advanced Database Technology and Design
11
Secure Database Systems
Elena Ferrari and ... working
34 4 Advanced Database Technology and Design
[36 ] Özsu, M. T., and P. Valduriez, Principles of Distributed Database Systems, 2nd ed.,
Upper Saddle River, NJ...
Advanced Database Technology and Design phần 8 pdf
... able to handle nonstandard data so far kept in specialized data stores.
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Application
DBMS
Figure 12.1 Nonstandard application using a DBMS and file-based ... the
problem of design and development of component DBMSs and their appli-
cations. Because the type of systems considered here are only in the process of
424 Advanced Databa...
Advanced Database Technology and Design phần 9 pdf
... X → Y and W ⊇ Z, then X,W → Y,Z.
•
R3 (transitivity): If X → Y and Y → Z, then X → Z.
•
R4 (pseudo-transitivity): If X → Y and Y,W → Z, then X,W → Z.
456 Advanced Database Technology and Design
from ... aims to find valid
dependencies.
472 Advanced Database Technology and Design
Author Title Editor Date
A1 T1 E1 D1
A2 T1 E1 D1
A2 T2 E2 D2
A3 T3 E2 D3
Figure 13. 14 Le...
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