Table of Contents for
Mastering phpMyAdmin 3.4 for Effective MySQL Management

Version ebook / Retour

Cover image for bash Cookbook, 2nd Edition Mastering phpMyAdmin 3.4 for Effective MySQL Management by Marc Delisle Published by Packt Publishing, 2012
  1. Cover
  2. Mastering phpMyAdmin 3.4 for Effective MySQL Management
  3. Mastering phpMyAdmin 3.4 for Effective MySQL Management
  4. Credits
  5. About the Author
  6. About the Reviewers
  7. www.PacktPub.com
  8. Preface
  9. What you need for this book
  10. Who this book is for
  11. Conventions
  12. Reader feedback
  13. Customer support
  14. 1. Getting Started with phpMyAdmin
  15. What is phpMyAdmin?
  16. Installing phpMyAdmin
  17. Configuring phpMyAdmin
  18. Installing phpMyAdmin configuration storage
  19. Upgrading phpMyAdmin
  20. Summary
  21. 2. Configuring Authentication and Security
  22. Securing phpMyAdmin
  23. Summary
  24. 3. Over Viewing the Interface
  25. Customizing general settings
  26. Character sets and collations
  27. Navigation panel
  28. Main panel
  29. User preferences
  30. Query window
  31. Summary
  32. 4. Creating and Browsing Tables
  33. Creating our first table
  34. Inserting data manually
  35. Browse mode
  36. Profiling queries
  37. Creating an additional table
  38. Summary
  39. 5. Changing Data and Structure
  40. Changing table structure
  41. Summary
  42. 6. Exporting Structure and Data (Backup)
  43. Exporting a database
  44. Exporting a table
  45. Exporting selectively
  46. Exporting multiple databases
  47. Saving the export file on the server
  48. Memory limits
  49. Summary
  50. 7. Importing Structure and Data
  51. Importing SQL files
  52. Importing CSV files
  53. Importing other formats
  54. Reading files from a web server upload directory
  55. Displaying an upload progress bar
  56. Summary
  57. 8. Searching Data
  58. Performing a complete database search
  59. Stopping an errant query
  60. Summary
  61. 9. Performing Table and Database Operations
  62. Changing table attributes
  63. Emptying or deleting a table
  64. Renaming, moving, and copying tables
  65. Performing other table operations
  66. Multi-table operations
  67. Database operations
  68. Summary
  69. 10. Benefiting from the Relational System
  70. Defining relations with the relation view
  71. Defining relations with the Designer
  72. Benefiting from the defined relations
  73. Column commenting
  74. Summary
  75. 11. Entering SQL Statements
  76. The Query window
  77. Multi-statement queries
  78. Pretty printing (syntax highlighting)
  79. The SQL Validator
  80. Summary
  81. 12. Generating Multi-table Queries
  82. Exploring column criteria
  83. Generating automatic joins (internal relations)
  84. Executing the query
  85. The visual builder
  86. Summary
  87. 13. Synchronizing Data and Supporting Replication
  88. Supporting MySQL replication
  89. Summary
  90. 14. Using Query Bookmarks
  91. Creating bookmarks
  92. Recalling bookmarks from the bookmarks list
  93. Passing a parameter to a bookmark
  94. Summary
  95. 15. Documenting the System
  96. Generating relational schemas
  97. Summary
  98. 16. Transforming Data using MIME
  99. Enabling transformations
  100. Examples of transformations
  101. Summary
  102. 17. Supporting Features Added in MySQL 5
  103. Supporting routines—stored procedures and functions
  104. Executing code with triggers
  105. Using information_schema
  106. Partitioning
  107. Exploring the event scheduler
  108. Summary
  109. 18. Tracking Changes
  110. Prerequisites
  111. Principles
  112. Initiating tracking for one table
  113. Testing the tracking mechanism
  114. Determining tracking status
  115. Structure snapshot
  116. Exporting a version
  117. Creating a new version
  118. Deleting tracking information
  119. Summary
  120. 19. Administrating the MySQL Server
  121. Database information
  122. Server information
  123. Summary
  124. A. Troubleshooting and Support
  125. Seeking support
  126. Contributing to the project

Using information_schema

In the SQL:2003 Standard, access to the data dictionary (or database metadata) is provided by a structure called information_schema. As this is part of the Standard, and already exists in other database systems, the decision to implement this feature into MySQL was a very good one.

Note

MySQL has added some information that is not part of the standard, for example, INFORMATION_SCHEMA.COLUMNS.COLUMN_TYPE. Be aware of the fact that if you use this information in a software project, it might not be portable to other SQL implementations.

A phpMyAdmin user sees the information_schema as a normal database containing views. These views describe many aspects of the structure of the databases hosted on this server. The following screenshot shows a subset of what can be seen (and in fact, the only possible operation on this database is SELECT):

Using information_schema

Internally, phpMyAdmin can call the information_schema, instead of the corresponding SHOW statements to retrieve metadata. This behavior is controlled by the $cfg['Servers'][$i]['DisableIS'] directive. Some SELECT operations involving a WHERE clause on information_schema are really slow (many minutes of wait time) when the server hosts hundreds of databases or tables, and this is yet to be fixed by the MySQL team; this is why this directive is set to true by default, thus avoiding the use of information_schema.

The $cfg['Servers'][$i]['hide_db'] parameter can be used to hide this "database" to users who might be confused by the sudden appearance of a database that they know nothing about. It will probably depend on their level of expertise in MySQL. On a multi-user installation of phpMyAdmin, we cannot please everyone about this parameter's value.