Index_D

D

Data Definition Language statements, 3, 10 “19, 498

data dictionary (Oracle database), 276

data source object, creating, 484

data source object attributes, setting, 484 “486

data sources

to connect to a database, 484

looking up, 484

registering (binding), 484

data type of columns , changing, 299

data type conversion functions, 76 “83

data type inheritance, 382 “383

data types

Java, 488 “490

Oracle, 488 “490, 551 “556

PL/SQL, 334

database integrity, 253 “255

database management system, defined, 2

database objects. See objects (database)

database security, 271 “292

database structures (schemas), 2, 8 “19, 26

database time zone, 121

database transactions. See transactions

database types, common Oracle, 11 “13

database URL, 482 “483

database user , creating, 11

DataSource attributes, table of, 485

DataSource interface (javax.sql), 484

date arithmetic, 31 “32

Date class (Java), 492

DATE class (oracle.sql), 518

date columns, converting using NVL(), 36

date format, setting the default, 112 “113

DATE keyword, 102

DATE type (Oracle SQL), 12, 492, 553

DATE variable, defining, 157

dates and times, 101 “139

default formats for, 102 “103

Oracle default format for, 21, 29

storing and retrieving, 102 “104

strings to format, 108 “109

vs. timestamps, 123

using MAX() and MIN() with, 91

datetime formatting

parameters, 105 “108

separators, 107

specifying, 110

suffixes, 107 “108

datetime functions, 115 “120

datetimes, 102

converting, 104 “112

converting between time zones, 123

converting Strings to, 109 “112

converting to Strings, 104 “109

day, datetime formatting parameters for, 106 “107

day to second interval literals, 136

DBMS_FLASHBACK package (PL/SQL), 266

DISABLE() procedure, 268 “269

ENABLE_AT_SYSTEM_CHANGE_NUMBER() procedure, 269

ENABLE_AT_TIME() procedure, 267

EXECUTE privilege on, 266

GET_SYSTEM_CHANGE_NUMBER() procedure, 268

DBMS_LOB methods , 434 “435

DBMS_LOB package, 434 “435

DBMS_OUTPUT.PUT_LINE() method, 333

DBTIMEZONE() function, 121

DCL (Data Control Language) statements, 4

DDL (Data Definition Language) statements, 3, 10 “19,  498

DEC data type, 553

DECIMAL data type, 553

declaration block (PL/SQL), 333

DECLARE section (PL/SQL), 334

DECODE() function, 190 “191

to convert multiple column values, 208 “209

on value returned from GROUPING(), 208

DEFAULT keyword, in a UPDATE statement, 256

DEFERRABLE CLAUSE, 304

DEFERRABLE constraint, 304

DEFERRABLE INITIALLY DEFERRED, 305

DEFINE command, 146, 155 “157

defined variables , 155 “157

defining and listing, 155 “157

explained, 152

using ACCEPT command for, 156 “157

using in a script, 158 “159

DELETE clause of CREATE TABLE, 294

DELETE statement, 22, 374, 376, 493

containing a subquery, 179

removing rows using, 252 “253

using, 408 “409

delete_address() procedure, 408

DENSE_RANK() function, 216 “221

DEREF() function, 379

DESC keyword

with ORDER BY, 44

in OVER clause, 217

DESCRIBE (DESC) command, 20, 31, 142, 248, 296, 298, 325, 392

getting information on object types, 370 “371

output columns, 142 “143

description column (products table), 16

detail (child) table, 16, 254

DIMENSION BY clause, 236

dimensions

getting the current value of, 239

in positional notation, 237

directory alias and file name , getting, 452

directory object, creating, 433

dirty reads (transactions), 264

DISABLE CONSTRAINT clause, 303 “304

DISABLE() procedure (DBMS_FLASHBACK), 268 “269

DISCONNECT command (SQL*Plus), 10

disconnecting from the database (SQL*Plus), 10

display_addresses() procedure, 407

DISTINCT clause, 36 “37, 90, 327, 537 “538, 548

distribution functions, 234 “235

division operator (/), 30

divisions table, 202

DML (Data Manipulation Language) statements, 3

on the object_customers table, 376 “378

on the object_products table, 375 “376

on the products table, 372 “374

on the purchases table, 378 “380

dob column (customers table), 15

DOUBLE PRECISION data type, 553

double quotation marks ("), 34, 250

DriverManager class (JDBC), 481

DROP CONSTRAINT clause, 303

DROP FUNCTION statement, 354

DROP INDEX statement, 320

DROP PACKAGE statement, 358

DROP PROCEDURE statement, 351

DROP ROLE statement, 291

DROP SEQUENCE statement, 315

DROP TABLE statement, 162 “163, 309

DROP TRIGGER statement, 364

DROP USER statement, 274

DROP VIEW statement, 329

dual tables, structure of, 31

duplicate rows

removing from output, 213

removing using HAVING, 214

retrieving, 184

suppressing display of, 537

UNION removal of, 535

duplicate value for a primary key column, 253

DUP_VAL_ON_INDEX exception, 345

durability (transaction property), 262

duration column ( coupons table), 134 “135

duration column (promotions table), 136 “137