DB2 pureXML Cookbook
IBM Press (Verlag)
978-0-13-815047-1 (ISBN)
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Master the Power of the IBM Hybrid Data Server
Hands-On Solutions and Best Practices for Developing and Managing XML Database Applications with DB2
More and more database developers and DBAs are being asked to develop applications and manage databases that involve XML data. Many are utilizing the highly praised DB2 pureXML technology from IBM. In the DB2 pureXML Cookbook, two leading experts from IBM offer the practical solutions and proven code samples that database professionals need to build better XML solutions faster. Organized by task, this book is packed with more than 700 easy-to-adapt “recipe-style” examples covering the entire application lifecycle–from planning and design through coding, optimization, and troubleshooting. This extraordinary library of recipes includes more than 250 XQuery and SQL/XML queries. With the authors’ hands-on guidance, you’ll learn how to combine pureXML “ingredients” to efficiently perform virtually any XML data management task, from the simplest to the most advanced.
Coverage includes
pureXML in DB2 9 for z/OS and DB2 9.1, 9.5, and 9.7 for Linux, UNIX, and Windows
Best practices for designing XML data, applications, and storage objects Importing, exporting, loading, replicating, and federating XML data
Querying XML data, from start to finish: XPath and XQuery data model and languages, SQL/XML, stored procedures, UDFs, and much more
Avoiding common errors and inefficient XML queries
Converting relational data to XML and vice versa
Updating and transforming XML documents
Defining and working with XML indexes
Monitoring and optimizing the performance of XML queries and other operations
Using XML Schemas to constrain and validate XML documents
XML application development–including code samples for Java, .NET, C, COBOL,PL/1, PHP, and Perl
Matthias Nicola is a Senior Software Engineer for DB2 pureXML at IBM’s Silicon Valley Lab. His work focuses on all aspects of XML in DB2, including XQuery, SQL/XML, XML storage, indexing, and performance. Matthias also works closely with customers and business partners, assisting them in the design, implementation, and optimization of XML solutions. Matthias has published more than a dozen articles on various XML topics (see www.matthiasnicola.de) and is a frequent speaker at DB2 conferences. Prior to joining IBM, Matthias worked on data warehousing performance for Informix Software. He received his doctorate in computer science from the Technical University of Aachen, Germany. Pav Kumar-Chatterjee has worked with DB2 since 1991 on DB2 for z/OS and since 2000 on DB2 for Linux, UNIX, and Windows. He is currently employed by IBM as a technical sales specialist for Information Management in the United Kingdom. He has helped customers implement the XML Extender product with DB2 V8 and has presented on DB2 and XML in the United Kingdom and around Europe.
Chapter 1 Introduction 1
1.1 Anatomy of an XML Document 2
1.2 Differences Between XML and Relational Data 4
1.3 Overview of DB2 pureXML 7
1.4 Benefits of DB2 pureXML over Alternative Storage Options for XML Data 10
1.5 XML Solutions to Relational Data Model Problems 11
1.5.1 When the Schema Is Volatile 12
1.5.2 When Data Is Inherently Hierarchical in Nature 12
1.5.3 When Data Represents Business Objects 12
1.5.4 When Objects Have Sparse Attributes 13
1.5.5 When Data Needs to be Exchanged 13
1.6 Summary 13
Chapter 2 Designing XML Data and Applications 15
2.1 Choosing Between XML Elements and XML Attributes 15
2.2 XML Tags versus Values 19
2.3 Choosing the Right Document Granularity 22
2.4 Using a Hybrid XML/Relational Approach 24
2.5 Summary 25
Chapter 3 Designing and Managing XML Storage Objects 27
3.1 Understanding XML Document Trees 28
3.2 Understanding pureXML Storage 30
3.3 XML Storage in DB2 for Linux, UNIX, and Windows 33
3.3.1 Storage Objects for XML Data 33
3.3.2 Defining Columns,Tables, and Table Spaces for XML Data 36
3.3.3 Dropping XML Columns 40
3.3.4 Improved XML Storage Format in DB2 9.7 40
3.4 Using XML Base Table Row Storage (Inlining) 41
3.4.1 Monitoring and Configuring XML Inlining 43
3.4.2 Potential Benefits and Drawbacks of XML Inlining 47
3.5 Compressing XML Data 48
3.6 Examining XML Storage Space Consumption 51
3.7 Reorganizing XML Data and Indexes 53
3.8 Understanding XML Space Management: A Comprehensive Example 54
3.9 XML in Range Partitioned Tables and MDC Tables 57
3.9.1 XML and Range Partitioning 57
3.9.2 XML and Multidimensional Clustering 58
3.10 XML in a Partitioned Database (DPF) 59
3.11 XML Storage in DB2 for z/OS 60
3.11.1 Storage Objects for XML Data 61
3.11.2 Characteristics of XML Table Spaces 63
3.11.3 Tables with Multiple XML Columns 64
3.11.4 Naming and Storage Conventions 64
3.12 Utilities for XML Objects in DB2 for z/OS 65
3.12.1 REPORT TABLESPACESET for XML 67
3.12.2 Reorganizing XML Data in DB2 for z/OS 68
3.12.3 CHECK DATA for XML 69
3.13 XML Parsing and Memory Consumption in DB2 for z/OS 71
3.13.1 Controlling the Memory Consumption of XML Operations 71
3.13.2 Redirecting XML Parsing to zIIP and zAAP 72
3.14 Summary 73
Chapter 4 Inserting and Retrieving XML Data 75
4.1 Inserting XML Documents 76
4.1.1 Simple Insert Statements 76
4.1.2 Reading XML Documents from Files or URLs 79
4.2 Deleting XML Documents 82
4.3 Retrieving XML Documents 83
4.4 Handling Documents with XML Declarations 85
4.5 Copying Full XML Documents 86
4.6 Dealing with XML Special Characters 87
4.7 Understanding XML Whitespace and Document Storage 89
4.7.1 Preserving XML Whitespace 91
4.7.2 Changing the Whitespace Default from “Strip” to “Preserve” 93
4.7.3 Storing XML Documents for Compliance 94
4.8 Summary 95
Chapter 5 Moving XML Data 97
5.1 Exporting XML Data in DB2 for Linux, UNIX, and Windows 98
5.1.1 Exporting XML Documents to a Single File 98
5.1.2 Exporting XML Documents as Individual Files 100
5.1.3 Exporting XML Documents as Individual Files with Non-Default Names 102
5.1.4 Exporting XML Documents to One or Multiple Dedicated Directories 102
5.1.5 Exporting Fragments of XML Documents 104
5.1.6 Exporting XML Data with XML Schema Information 105
5.2 Importing XML Data in DB2 for Linux, UNIX, and Windows 106
5.2.1 IMPORT Command and Input Files 107
5.2.2 Import/Insert Performance Tips 108
5.3 Loading XML Data in DB2 for Linux, UNIX, and Windows 109
5.4 Unloading XML Data in DB2 for z/OS 111
5.5 Loading XML Data in DB2 for z/OS 114
5.6 Validating XML Documents during Load and Insert Operations 116
5.7 Splitting Large XML Documents into Smaller Documents 116
5.8 Replicating and Publishing XML Data 118
5.9 Federating XML Data 120
5.10 Managing XML Data with HADR 121
5.11 Handling XML Data in db2look and db2move 122
5.12 Summary 123
Chapter 6 Querying XML Data: Introduction and XPath 125
6.1 An Overview of Querying XML Data 126
6.2 Understanding the XQuery and XPath Data Model 128
6.2.1 Sequences 128
6.2.2 Sequence in, Sequence out 130
6.3 Sample Data for XPath, SQL/XML, and XQuery 131
6.4 Introduction to XPath 132
6.4.1 Analogy Between XPath and Navigating a File System 133
6.4.2 Simple XPath Queries 133
6.5 How to Execute XPath in DB2 137
6.6 Wildcards and Double Slashes 140
6.7 XPath Predicates 142
6.8 Existential Semantics 147
6.9 Logical Expressions with and, or, not() 148
6.10 The Current Context and the Parent Step 151
6.11 Positional Predicates 153
6.12 Union and Construction of Sequences 154
6.13 XPath Functions 155
6.14 General and Value Comparisons 156
6.15 XPath Axes and Unabbreviated Syntax 157
6.16 Summary 157
Chapter 7 Querying XML Data with SQL/XML 159
7.1 Overview of SQL/XML 160
7.2 Retrieving XML Documents or Document Fragments with XMLQUERY 161
7.2.1 Referencing XML Columns in SQL/XML Functions 162
7.2.2 Retrieving Element Values Without XML Tags 163
7.2.3 Retrieving Repeating Elements with XMLQUERY 164
7.3 Retrieving XML Values in Relational Format with XMLTABLE 165
7.3.1 Generating Rows and Columns from XML Data 165
7.3.2 Dealing with Missing Elements 167
7.3.3 Avoiding Type Errors 168
7.3.4 Retrieving Repeating Elements with XMLTABLE 169
7.3.5 Numbering XMLTABLE Rows Based on Repeating Elements 173
7.3.6 Retrieving Multiple Repeating Elements at Different Levels 174
7.4 Using XPath Predicates in SQL/XML with XMLEXISTS 177
7.5 Common Mistakes with SQL/XML Predicates 181
7.6 Using Parameter Markers or Host Variables 183
7.7 XML Queries with Dynamically Computed XPath Expressions 185
7.8 Ordering a Query Result Set Based on XML Values 186
7.9 Converting XML Values to Binary SQL Types 187
7.10 Summary 188
Chapter 8 Querying XML Data with XQuery 189
8.1 XQuery Overview 190
8.2 Processing XML Data with FLWOR Expressions 191
8.2.1 Anatomy of a FLWOR Expression 191
8.2.2 Understanding the for and let Clauses 193
8.2.3 Understanding the where and order by Clauses 194
8.2.4 FLWOR Expressions with Multiple for and let Clauses 195
8.3 Comparing FLWOR Expressions, XPath Expressions, and SQL/XML 197
8.3.1 Traversing XML Documents 197
8.3.2 Using XML Predicates 198
8.3.3 Result Set Cardinalities in XQuery and SQL/XML 200
8.3.4 Using FLWOR Expressions in SQL/XML 201
8.4 Constructing XML Data 202
8.4.1 Constructing Elements with Computed Values 202
8.4.2 Constructing XML Data with Predicates and Conditions 204
8.4.3 Constructing Documents with Multiple Levels of Nesting 206
8.4.4 Constructing Documents with XML Aggregation in SQL/XML Queries 207
8.5 Data Types, Cast Expressions, and Type Errors 208
8.6 Arithmetic Expressions 212
8.7 XQuery Functions 214
8.7.1 String Functions 215
8.7.2 Number and Aggregation Functions 218
8.7.3 Sequence Functions 220
8.7.4 Namespace and Node Functions 222
8.7.5 Date and Time Functions 224
8.7.6 Boolean Functions 226
8.8 Embedding SQL in XQuery 227
8.9 Using SQL Functions and User-Defined Functions in XQuery 229
8.10 Summary 230
Chapter 9 Querying XML Data:Advanced Queries & Troubleshooting 233
9.1 Aggregation and Grouping of XML Data 233
9.1.1 Aggregation and Grouping Queries with XMLTABLE 234
9.1.2 Aggregation of Values within and across XML Documents 236
9.1.3 Grouping Queries in SQL/XML versus XQuery 237
9.2 Join Queries with XML Data 239
9.2.1 XQuery Joins between XML Columns 240
9.2.2 SQL/XML Joins between XML Columns 242
9.2.3 Joins between XML and Relational Columns 248
9.2.4 Outer Joins between XML Columns 250
9.3 Case-Insensitive XML Queries 252
9.4 How to Avoid “Bad” Queries 253
9.4.1 Construction of Excessively Large Documents 253
9.4.2 “Between” Predicates on XML Data 254
9.4.3 Large Global Sequences 256
9.4.4 Multilevel Nesting SQL and XQuery 257
9.5 Common Errors and How to Avoid Them 258
9.5.1 SQL16001N 259
9.5.2 SQL16002N 259
9.5.3 SQL16003N 260
9.5.4 SQL16005N 261
9.5.5 SQL16015N 262
9.5.6 SQL16011N 263
9.5.7 SQL16061N 263
9.5.8 SQL16075N 264
9.6 Summary 264
Chapter 10 Producing XML from Relational Data 267
10.1 SQL/XML Publishing Functions 268
10.1.1 Constructing XML Elements from Relational Data 269
10.1.2 NULL Values, Missing Elements, and Empty Elements 274
10.1.3 Constructing XML Attributes from Relational Data 275
10.1.4 Constructing XML Documents from Multiple Relational Rows 277
10.1.5 Constructing XML Documents from Multiple Relational Tables 281
10.1.6 Comparing XMLAGG,XMLCONCAT, and XMLFOREST 284
10.1.7 Conditional Element Construction 284
10.1.8 Leading Zeros in Constructed Elements and Attributes 285
10.1.9 Default Tagging of Relational Data with XMLROW and XMLGROUP 286
10.1.10 GUI-Based Definition of SQL/XML Publishing Queries 289
10.1.11 Constructing Comments, Processing Instructions, and Text Nodes 290
10.1.12 Legacy Functions 290
10.2 Using XQuery Constructors with Relational Input 290
10.3 XML Declarations for Constructed XML Data 292
10.4 Inserting Constructed XML Data into XML Columns 294
10.5 Summary 295
Chapter 11 Converting XML to Relational Data 297
11.1 Advantages and Disadvantages of Shredding 297
11.2 Shredding with the XMLTABLE Function 301
11.2.1 Hybrid XML Storage 303
11.2.2 Relational Views over XML Data 305
11.3 Shredding with Annotated XML Schemas 306
11.3.1 Annotating an XML Schema 306
11.3.2 Defining Schema Annotations Visually in IBM Data Studio 311
11.3.3 Registering an Annotated Schema 311
11.3.4 Decomposing One XML Document at a Time 312
11.3.5 Decomposing XML Documents in Bulk 315
11.4 Summary 318
Chapter 12 Updating and Transforming XML Documents 321
12.1 Replacing a Full XML Document 322
12.2 Modifying Documents with XQuery Updates 324
12.3 Updating the Value of an XML Node in a Document 326
12.3.1 Replacing an Element Value 326
12.3.2 Replacing an Attribute Value 327
12.3.3 Replacing a Value Using a Parameter Marker 328
12.3.4 Replacing Multiple Values in a Document 328
12.3.5 Replacing an Existing Value with a Computed Value 329
12.4 Replacing XML Nodes in a Document 331
12.5 Deleting XML Nodes from a Document 333
12.6 Renaming Elements or Atttributes in a Document 334
12.7 Inserting XML Nodes into a Document 335
12.7.1 Defining the Position of Inserted Elements 335
12.7.2 Defining the Position of Inserted Attributes 336
12.7.3 Insert Examples 337
12.8 Handling Repeating and Missing Nodes 340
12.9 Modifying Multiple XML Nodes in the Same Document 343
12.9.1 Snapshot Semantics and Conflict Situations 343
12.9.2 Converting Elements to Attributes and Vice Versa 345
12.10 Modifying XML Documents in Queries 346
12.11 Modifying XML Documents in Insert Operations 349
12.12 Modifying XML Documents in Update Cursors 350
12.13 XML Updates in DB2 for z/OS 351
12.14 Transforming XML Documents with XSLT 352
12.14.1 The XSLTRANSFORM Function 353
12.14.2 XML to HTML Transformation 356
12.15 Summary 358
Chapter 13 Defining and Using XML Indexes 361
13.1 Defining XML Indexes 362
13.1.1 Unique XML Indexes 364
13.1.2 Lean XML Indexes 365
13.1.3 Using the DB2 Control Center to Create XML Indexes 366
13.2 XML Index Data Types 367
13.2.1 VARCHAR(n) 367
13.2.2 VARCHAR HASHED 368
13.2.3 DOUBLE and DECFLOAT 369
13.2.4 DATE and TIMESTAMP 369
13.2.5 Choosing a Suitable Index Data Type 369
13.2.6 Rejecting Invalid Values 371
13.3 Using XML Indexes to Evaluate Query Predicates 373
13.3.1 Understanding Index Eligibility 373
13.3.2 Data Types in XML Indexes and Query Predicates 374
13.3.3 Text Nodes in XML Indexes and Query Predicates 375
13.3.4 Wildcards in XML Indexes and Query Predicates 376
13.3.5 Using Indexes for Structural Predicates 377
13.4 XML Indexes and Join Predicates 379
13.5 XML Indexes on Non-Leaf Elements 383
13.6 Special Cases Where XML Indexes Cannot be Used 385
13.6.1 Special Cases with XMLQUERY 385
13.6.2 Parent Steps 385
13.6.3 The let and return Clauses 386
13.7 XML Index Internals 387
13.7.1 XML Index Keys 387
13.7.2 Logical and Physical XML Indexes 389
13.8 XML Index Statistics 390
13.9 Summary 393
Chapter 14 XML Performance and Monitoring 395
14.1 Explaining XML Queries in DB2 for Linux,UNIX, and Windows 396
14.1.1 The Explain Tables in DB2 for Linux, UNIX, and Windows 396
14.1.2 Using db2exfmt to Obtain Access Plans 397
14.1.3 Using Visual Explain to Display Access Plans 400
14.1.4 Access Plan Operators 401
14.1.5 Understanding and Analyzing XML Query Execution Plans 403
14.2 Explaining XML Queries in DB2 for z/OS 409
14.2.1 The Explain Tables in DB2 for z/OS 409
14.2.2 Obtaining Access Plan Information in SPUFI 410
14.2.3 Using Visual Explain to Display Access Plans 411
14.2.4 Access Plan Operators 413
14.2.5 Understanding and Analyzing XML Query Execution Plans 414
14.3 Statistics Collection for XML Data 417
14.3.1 Statistics Collection for XML Data in DB2 for z/OS 417
14.3.2 Statistics Collection for XML Data in DB2 for Linux, UNIX, and Windows 418
14.3.3 Examining XML Statistics with db2cat 419
14.4 Monitoring XML Activity 424
14.4.1 Using the Snapshot Monitor in DB2 for Linux, UNIX, and Windows 424
14.4.2 Monitoring Database Utilities 427
14.5 Best Practices for XML Performance 428
14.5.1 XML Document Design 428
14.5.2 XML Storage 429
14.5.3 XML Queries 430
14.5.4 XML Indexes 432
14.5.5 XML Updates 433
14.5.6 XML Schemas 434
14.5.7 XML Applications 434
14.6 Summary 435
Chapter 15 Managing XML Data with Namespaces 437
15.1 Introduction to XML Namespaces 437
15.1.1 Namespace Declarations in XML Documents 439
15.1.2 Default Namespaces 442
15.2 Exploring Namespaces in XML Documents 444
15.3 Querying XML Data with Namespaces 447
15.3.1 Declaring Namespaces in XML Queries 448
15.3.2 Using Namespace Declarations in SQL/XML Queries 451
15.3.3 Using Namespaces in the XMLTABLE Function 452
15.3.4 Dealing with Multiple Namespaces per Document 454
15.4 Creating Indexes for XML Data with Namespaces 456
15.5 Constructing XML Data with Namespaces 460
15.5.1 SQL/XML Publishing Functions and Namespaces 460
15.5.2 XQuery Constructors and Namespaces 462
15.6 Updating XML Data with Namespaces 463
15.6.1 Updating Values in Documents with Namespaces 464
15.6.2 Renaming Nodes in Documents with Namespace Prefixes 465
15.6.3 Renaming Nodes in Documents with Default Namespaces 467
15.6.4 Inserting and Replacing Nodes in Documents with Namespaces 468
15.7 Summary 469
Chapter 16 Managing XML Schemas 471
16.1 Introduction to XML Schemas and Their Usage 472
16.1.1 Valid Versus Well-Formed XML Documents 473
16.1.2 To Validate or Not to Validate,That Is the Question! 474
16.1.3 Custom Versus Industry Standard XML Schemas 474
16.2 Anatomy of an XML Schema 476
16.3 An XML Schema with Include and Import 479
16.4 Registering XML Schemas 483
16.4.1 Registering XML Schemas in the DB2 Command Line Processor 484
16.4.2 Registering XML Schemas from Applications via Stored Procedures 486
16.4.3 Registering XML Schemas from Java Applications via JDBC 488
16.4.4 Two XML Schemas Sharing a Common Schema Document 489
16.4.5 Error Situations and How to Resolve Them 490
16.5 Removing XML Schemas from the Schema Repository 492
16.6 XML Schema Evolution 493
16.6.1 Schema Evolution Without Document Validation 494
16.6.2 Generic Schema Evolution with Document Validation 494
16.6.3 Compatible Schema Evolution with the UPDATE XMLSCHEMA Command 495
16.7 Granting and Revoking XML Schema Usage Privileges 499
16.8 Document Type Definitions (DTDs) and External Entities 501
16.9 Browsing the XML Schema Repository (XSR) 502
16.9.1 Tables and Views of the XML Schema Repository 503
16.9.2 Queries against the XML Schema Repository 508
16.10 XML Schema Considerations in DB2 for z/OS 510
16.11 Summary 512
Chapter 17 Validating XML Documents against XML Schemas 513
17.1 Document Validation Upon Insert 514
17.2 Document Validation Upon Update 518
17.3 Validation without Rejecting Invalid Documents 519
17.4 Enforcing Validation with Check Constraints 520
17.5 Automatic Validation with Triggers 523
17.6 Diagnosing Validation and Parsing Errors 525
17.7 Validation during Load and Import Operations 530
17.7.1 Validation against a Single XML Schema 530
17.7.2 Validation against Multiple XML Schemas 531
17.7.3 Using a Default XML Schema 532
17.7.4 Overriding XML Schema References 532
17.7.5 Validation Based on schemaLocation Attributes 534
17.8 Checking Whether an Existing Document Has Been Validated 534
17.9 Validating Existing Documents in a Table 535
17.10 Finding the XML Schema for a Validated Document 538
17.11 How to Undo Document Validation 540
17.12 Considerations for Validation in DB2 for z/OS 540
17.12.1 Document Validation Upon Insert 541
17.12.2 Document Validation Upon Update 542
17.12.3 Validating Existing Documents in a Table 543
17.12.4 Summary of Platform Similarities and Differences 543
17.13 Summary 544
Chapter 18 Using XML in Stored Procedures, UDFs, and Triggers 547
18.1 Manipulating XML in SQL Stored Procedures 548
18.1.1 Basic XML Manipulation in Stored Procedures 548
18.1.2 A Stored Procedure to Store XML in a Hybrid Manner 550
18.1.3 Loops and Cursors 553
18.1.4 A Stored Procedure to Update a Selected XML Element or Attribute 554
18.1.5 Three Tips for Testing Stored Procedures 555
18.2 Manipulating XML in User-Defined Functions 556
18.2.1 A UDF to Extract an Element or Attribute Value 557
18.2.2 A UDF to Extract the Values of a Repeating Element 557
18.2.3 A UDF to Shred XML Data to a Relational Table 558
18.2.4 A UDF to Modify an XML Document 559
18.3 Manipulating XML Data with Triggers 561
18.3.1 Insert Triggers on Tables with XML Columns 562
18.3.2 Delete Triggers on Tables with XML Columns 563
18.3.3 Update Triggers on XML Columns 564
18.4 Summary 564
Chapter 19 Performing Full-Text Search 567
19.1 Overview of Text Search in DB2 568
19.2 Sample Table and Data 570
19.3 Enabling a Database for the DB2 Net Search Extender 571
19.4 Managing Full-Text Indexes with the DB2 Net Search Extender 572
19.4.1 Creating Basic Text Indexes 572
19.4.2 Creating Text Indexes with Specific Storage Paths 573
19.4.3 Creating Text Indexes with a Periodic Update Schedule 574
19.4.4 Creating Text Indexes for Specific Parts of Each Document 576
19.4.5 Creating Text Indexes with Advanced Options 578
19.4.6 Updating and Reorganizing Text Indexes 579
19.4.7 Altering Text Indexes 580
19.5 Performing XML Full-Text Search with the DB2 Net Search Extender 581
19.5.1 Full-Text Search in SQL and XQuery 581
19.5.2 Full-Text Search with Boolean Operators 583
19.5.3 Full-Text Search with Custom Document Models 585
19.5.4 Advanced Search with Proximity, Fuzzy, and Stemming Options 586
19.5.5 Finding the Correct Match within an XML Document 587
19.5.6 Search Conditions on Sibling Branches of an XML Document 588
19.5.7 Text Search in the Presence of Namespaces 588
19.6 DB2 Text Search 590
19.6.1 Enabling a Database for DB2 Text Search 590
19.6.2 Creating and Maintaining Full-Text Indexes for DB2 Text Search 591
19.6.3 Writing DB2 Text Search Queries for XML Data 592
19.6.4 Full-Text Search with XPath Expressions 593
19.6.5 Full-Text Search with Wildcards 594
19.7 Summary of Text Search Administration Commands 594
19.8 XML Full-Text Search in DB2 for z/OS 596
19.9 Summary 596
Chapter 20 Understanding XML Data Encoding 597
20.1 Understanding Internal and External XML Encoding 599
20.1.1 Internally Encoded XML Data 599
20.1.2 Externally Encoded XML Data 600
20.2 Avoiding Code Page Conversions 601
20.3 Using Non-Unicode Databases for XML 601
20.4 Examples of Code Page Issues 602
20.4.1 Example 1: Chinese Characters in a Non-Unicode Code Page ISO-8859-1 602
20.4.2 Example 2: Fetching Data from a Non-Unicode Code Database into a Character Type Application Variable 603
20.4.3 Example 3: Encoding Issues with XMLTABLE and XMLCAST 604
20.4.4 Example 4: Japanese Literal Values in a Non-Unicode Database 605
20.4.5 Example 5: Data Expansion and Shrinkage Due to Code Page Conversion 605
20.5 Avoiding Data Loss and Encoding Errors in Non-Unicode Databases 606
20.6 Summary 606
Chapter 21 Developing XML Applications with DB2 609
21.1 The Value of DB2 pureXML for Application Development 610
21.1.1 Avoid XML Parsing in the Application Layer 610
21.1.2 Storing Business Objects in an Intuitive Format 612
21.1.3 Rapid Prototyping 612
21.1.4 Responding Quickly to Changing Business Needs 613
21.2 Using Parameter Markers or Host Variables 613
21.3 Java Applications 615
21.3.1 XML Support in JDBC 3.0 615
21.3.2 XML Support in JDBC 4.0 619
21.3.3 Comprehensive Example of Manipulating XML Data with JDBC 4.0 621
21.3.4 Creating XML Documents from Application Data 627
21.3.5 Binding XML Data to Java Objects 629
21.3.6 IBM pureQuery 629
21.4 .NET Applications 631
21.4.1 Querying XML Data in .NET Applications 632
21.4.2 Manipulating XML Data in .NET Applications 633
21.4.3 Inserting XML Data from .NET Applications 635
21.4.4 XML Schema and DTD Handling in .NET Applications 636
21.5 CLI Applications 636
21.6 Embedded SQL Applications 639
21.6.1 COBOL Applications with Embedded SQL 640
21.6.2 PL/1 Applications with Embedded SQL 643
21.6.3 C Applications with Embedded SQL 645
21.7 PHP Applications 647
21.8 Perl Applications 650
21.9 XML Application Development Tools 651
21.9.1 IBM Data Studio Developer 652
21.9.2 IBM Database Add-ins for Visual Studio 656
21.9.3 Altova XML Tools 656
21.9.4 658
21.9.5 Stylus Studio 659
21.10 Summary 659
Chapter 22 Exploring XML Information in the DB2 Catalog 661
22.1 XML-Related Catalog Information in DB2 for Linux, UNIX, and Windows 661
22.1.1 Catalog Information for XML Columns 661
22.1.2 The XML Strings and Paths Tables 662
22.1.3 The Internal XML Regions and Path Indexes 663
22.1.4 Catalog Information for User-Defined XML Indexes 664
22.1.5 Catalog Information for XML Schemas 667
22.2 XML-Related Catalog Information in DB2 for z/OS 667
22.2.1 Catalog Information for XML Storage Objects 667
22.2.2 Catalog Information for XML Indexes 671
22.2.3 Catalog Information for XML Schemas 672
22.3 Summary 673
Chapter 23 Test Your Knowledge–The DB2 pureXML Quiz 675
23.1 Designing XML Data and Applications 675
23.2 Designing and Managing Storage Objects for XML 677
23.3 Inserting and Retrieving XML Data 680
23.4 Moving XML Data 681
23.5 Querying XML 682
23.6 Producing XML from Relational Data 686
23.7 Converting XML to Relational Data 687
23.8 Updating and Transforming XML Documents 688
23.9 Defining and Using XML Indexes 689
23.10 XML Performance and Monitoring 692
23.11 Managing XML Data with Namespaces 693
23.12 XML Schemas and Validation 694
23.13 Performing Full-Text Search 696
23.14 XML Application Development 697
23.15 Answers 700
Appendix A Getting Started with DB2 pureXML 703
A.1 Exploring the Structure of XML Documents 703
A.1.1 Exploring XML Documents in the DB2 Control Center 703
A.1.2 Exploring XML Documents in the CLP 704
A.1.3 Exploring XML Documents in SPUFI 705
A.2 Tips for Running XML Operations in the CLP 706
Appendix B The XML Sample Database 709
B.1 XML Sample Database on DB2 for Linux, UNIX, and Windows 709
B.2 XML Sample Tables on DB2 for z/OS 710
B.3 Table customer–Column info 710
B.4 Table product–Column description 712
B.5 Table purchaseorder–Column porder 713
Appendix C Further Reading 717
C.1 General Resources for All Chapters 717
C.2 Chapter-Specific Resources 718
C.3 Resources on the Integration of DB2 pureXML with Other Products 726
Index 727
| Erscheint lt. Verlag | 27.8.2009 |
|---|---|
| Verlagsort | Armonk |
| Sprache | englisch |
| Maße | 185 x 240 mm |
| Gewicht | 137 g |
| Themenwelt | Informatik ► Datenbanken ► DB2 |
| ISBN-10 | 0-13-815047-8 / 0138150478 |
| ISBN-13 | 978-0-13-815047-1 / 9780138150471 |
| Zustand | Neuware |
| Informationen gemäß Produktsicherheitsverordnung (GPSR) | |
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