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IBM DB2, 421-27
address spaces, 421-23
concurrency control, 426-27
cost/performance comparison, 443-44
Database Global Memory segment, 425-26
Database Manager Shared Memory, 424-25
DBAS, 421-22
DBAS functionality, 423-24
DDF, 422
defined, 421
IRLM, 422
join methods, 427
locking, 426-27
memory management, 424-26
query optimization, 426
results, 437
SPAS, 423
SSAS, 422
See also Database systems performance analysis
Immediate addressing, 47
Independence, 117-18
of events, 147
probability and, 141
Index addressing, 48
Indirect addressing, 48
Information sharing, 11-12
Informix Dynamic Server, 417-21
advantages, 418
cost-based query optimizer, 420
cost/performance comparison, 443-44
data consistency, 419
defined, 417
dynamic scalable architecture (DSA), 417-18
isolation, 419
join methods, 419-20
locking, 418-19
memory handling, 420-21
optimizer directives, 420
Oracle vs., 441-42
recovery, 419
results, 437
SQL Server vs., 438, 440
thread stack, 421
See also Database systems performance analysis
Input/output processor (IOP), 307
design, 307
functional architecture, 308
transport control implementation, 311
Instruction architectures, 6-7, 47
Instruction execution
cycle, 6, 43
sequence, 44
Instruction register, 44
Instructions
0-address, 45
1-address, 45-46
1-and-1/2-address, 46
2-address, 46
2-and-1/2-address, 46
3-address, 46-47
types of, 44-47
Instrumentation, 305
Integrity manager, 93-94
defined, 93
referential integrity check, 93-94
See also Database systems
Interface units
events, 477-78
LAN simulation modeling, 467-68
network (NIUs), 54
token bus distribution system, 459
Interrupts
management, 65-66
types of, 50
Intervals, 115-16
I/O architectures, 7, 49-50
I/O Manager, Windows NT, 368
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