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The PL/SQL Challenge offers an ever-growing library of information to help you become more expert in the Oracle technology stack. The Quizzes tab gives you access to all quizzes taken in the past. The Resources tab offers quick, searchable access to many topics in Oracle documentation, to popular Ask Tom threads, and to fascinating blog posts from around the world. Utilities gives you quick access to SQL and PL/SQL utilities, i.e., reusable code. Commentary allows you to search across all quiz discussions.


Resources offer easy and quick access to Oracle documentation, interesting blog posts by Oracle technologists from around the world, and even some handy PL/SQL utilities you might want to add to your toolbox.

Note: if you choose to download and use this code, it is entirely your responsibility to make sure that it does not have any adverse effect on your applications. Think about this way: you are responsible for this code when you choose to compile it into your database. Having said that, we will make every effort to ensure that the code offered is verified to perform as claimed.

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Database DesignAbout OracleArticleReport Issue
Database DesignAdvanced Query RewriteOracle Database 11g Release 2 Documentation LibraryDocumentationReport Issue
Database DesignAssessing I/O for Blocks, not RowsOracle Database 11g Release 2 Documentation LibraryDocumentationReport Issue
Database DesignAtomic Database Values - How small is small enough?Database Design ResourceArticleReport Issue
Database DesignBasic Query RewriteOracle Database 11g Release 2 Documentation LibraryDocumentationReport Issue
Database DesignCREATE INDEXOracle Database 11g Release 2 Documentation LibraryDocumentationReport Issue
Database DesignCREATE MATERIALIZED VIEWOracle Database 11g Release 2 Documentation LibraryDocumentationReport Issue
Database DesignCREATE ROLE syntaxOracle Database 11g Release 2 Documentation LibraryDocumentationReport Issue
Database DesignCREATE TABLEOracle Database 11g Release 2 Documentation LibraryDocumentationReport Issue
Database DesignCheck ConstraintsOracle Database 11g Release 2 Documentation LibraryDocumentationReport Issue
Database DesignCompression in Oracle – Part 1: Basic Table CompressionAll Things OracleArticleReport Issue
Database DesignConstraints on Materialized ViewsSQL SnippetsDocumentationReport Issue
Database DesignDatabase Skills: A Sane Approach To Choosing Primary KeysThe Database Programmer BlogArticleReport Issue
Database DesignDifference between Full Index Scans and Fast Full Index ScansAsk TomQuestion and AnswerReport Issue
Database DesignEntity supertype/subtype discussionStack OverflowArticleReport Issue
Database DesignForeign keys explained in the Oracle Concepts GuideOracle Database 11g Release 2 Documentation LibraryDocumentationReport Issue
Database DesignForth Normal FormWikipediaArticleReport Issue
Database DesignGRANT syntaxOracle Database 11g Release 2 Documentation LibraryDocumentationReport Issue
Database DesignHow to understand the 5th Normal FormStack OverflowQuestion and AnswerReport Issue
Database DesignImplementing Table Inheritance in SQL ServerSQL TeamArticleReport Issue
Database DesignIndex Skip Scan – Does Index Column Order Matter Any More ? (Warning Sign)Richard Foote's Oracle BlogDocumentationReport Issue
Database DesignIndex Skip ScanningOracle-BASEDocumentationReport Issue
Database DesignIndex Skip Scans - Performance Tuning GuideOracle Database 11g Release 2 Documentation LibraryDocumentationReport Issue
Database DesignIndex-Only Scan: Avoiding Table AccessUse The Index, Luke!ArticleReport Issue
Database DesignIndexes on Small Tables VIIRichard Foote's Oracle BlogArticleReport Issue
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