Tài liệu Expert SQL Server 2008 Development- P10 ppt

 INDEX
 T
STLength( ) method, 313
stored procedures
advantages of, 196–197
table hints, 241
controversy over, 196
tables, classes compared to, 13–14
for data API, 18
TDD (Test-Driven Development) methodology,
23, 196
data transactions, effects on, 97–98
described, 196
technical limitations, 294–296
identifying, 116
tempdb database, 137–138
optional query parameters, handling, 205
temporal data. See also dates; intervals; times
output characteristics, 191
categories of, 322
parameter passing, 230–232
data types, 322
performance testing, effect on, 70–71
durations, 365–366
security, 104, 112–114, 230–232
importance, 321
signing using certificates, 114–116
querying, 269
static, 197
time zone issues, 341–344, 346
STPointFromWKB( ) method, 297

tessellated, 313
street data, accessing, 387
Test-Driven Development (TDD) methodology,
23, 196
STRelate( ) function, 312
stress testing, 36
testing
string encoding, 395
performance
string-handling functions, 183–185
additional information, 68
String.IndexOf( ) method, 183–184
counters, 61–62
strong naming, 177
Data Collector, 65, 67
STTouches( ) method, 294
DMVs, 62–63
STxxxxFromWKB( ) method, 297
extended events, 64–65
su command, UNIX, 102
granular analysis, 69, 71
subordinate nodes, 372
identifying problems, 71
Subversion, 237
importance, 57–58
SUSER_NAME function, 109
process, 68
SymKey1 key, 130
profiling server activity, 59–61
symmetric keys, 124, 126–127, 130–133, 140

running, 69–71
sysadmin role, 134
software
sys.certificates view, 116
benefits, 58
sys.crypt_properties view, 116
best practices, 36–39
sys.dm_database_encryption_keys view, 137
databases, shortage of, 49
sys.dm_db_index_operational_stats DMV, 63
reasons for, 56
sys.dm_db_index_physical_stats DMV, 63
stored procedures and, 196
sys.dm_db_index_usage_stats DMV, 63
techniques for, 55–56
sys.dm_exec_cached_plans DMV, 200
testability, 20–21
sys.dm_exec_query_stats DMV, 63
timing, 55
sys.dm_exec_sql_text function, 148, 200
types of, 49–52, 55–58
sys.dm_os_performance_counters DMV, 43, 63
volume of tests needed, 57–58
sys.dm_os_wait_stats DMV, 63
thumbprint, certificate. See certificates
sys.dm_os_waiting_tasks DMV, 63
TIGER/Line data, 387
sys.dm_tran_locks DMV, 63
time datatype, 323
sys.spatial_reference_systems system table, 292

time zones, effects on data, 341–344, 346
sys.sysusers table, 42
time-based data. See temporal data
System.Data.SqlTypes .NET namespace, 160–
161
times. See also calendar tables
calculations on, 329, 331–336
System.DateTime string formatting, 326
constraining, 347
431
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 INDEX
Universel Temps Coordonné (UTC), 341–344 times (cont.)
UNSAFE permission set, 163 default, 324
UPDATE statement, 152 input formats, 323–324
UPDATE trigger, 31 querying, 326–329, 337–341, 362, 364–365
updateable cursors, 243 ToString method, 326
updates, causing cycles, 405 touching, 294
US geographical data, accessing, 387 tracing SQL Server exceptions, 85
User Error Message events, 85 transactional locks, 250
user interface data, 12 transactions
USER_NAME function, 109 doomed, 100
user-defined functions (UDFs), 191 exceptions and, 96–99
users rolling back, 96–100
creating, 103–104 stored procedures and, 97–98
defined, 103 transparent data encryption, 136–139
impersonating, 102–104, 107–110 trees
proxy, 114 defined, 372
use of, 103–104 overview, 371
UTC (Universel Temps Coordonné), 341–344 triggers, 266

UTM (Universal Transverse Mercator) grid
coordinates, 290, 292
Triple DES, 130
trustworthy databases
marking, 175
security ramifications, 175
 V
turning off, 175
try block, defined, 87
valid time component, 322
try/catch exception handling, 87–92, 100
validating input, 40–42
T-SQL, versus SQLCLR, 178–184
varchar datatype, 34
T-SQL function, 40, 137
varchar type, 34
T-SQL stored procedures, 6
Visual SourceSafe, 237
TSQLUnit unit testing framework, 52
Visual Studio Team System 2008, 69
two-part naming, 105
 W
 U
WAITFOR command, 252
UDFs (user-defined functions), 191
warnings, 79, 85
undirected edges, 371
web services, 18
undirected graphs, 372
Well-Known Binary (WKB) format, 296–297

unexpected behavior, 45
Well-Known Text (WKT) format, 290, 296–297
UNION ALL query, 303
white box testing, 49–50, 52
UNION query, 36, 303
wildcard searches with HMAC substrings, 153–
157
unit testing
advantages of, 54
WindowsIdentity class, 102
limits of, 51
WITH TIES argument, 308
uses of, 50, 55
WKB (Well-Known Binary) format, 296–297
unit testing frameworks
WKT (Well-Known Text) format, 290, 296–297
advantages of, 52
wrapper methods/classes
debug assertions, 52
advantages of, 161, 163
tips for using, 52–54
example of, 162–163
variety, 52
uses for, 161, 163
Universal Transverse Mercator (UTM) grid
coordinates, 290, 292
Writes column, 59
432
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 INDEX

433
 X
x coordinate, 312
XACT_ABORT setting, 77–78, 98–99
XACT_STATE function, 100
XandY table, 37, 39
XML format documents, 185, 263
XML serialization, 185–186
XP (extreme programming), 23, 55
 Y
y coordinate, 312
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