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<h2>Oracle Database SQL (1Z0-071)</h2><h3>Exam Overview</h3><p>The Oracle 1Z0-071: Oracle Database SQL certification exam is designed for professionals seeking to validate their skills in SQL and the Oracle Database platform. This foundational certification tests the candidate's knowledge of SQL concepts, data manipulation, data definition, and control capabilities within the Oracle Database environment.</p><h3>Exam Information</h3><p>This certification focuses on core SQL skills necessary for database development, administration, and data management. The 1Z0-071 validates a candidate's ability to write queries, manipulate data, create database objects, and manage database access using standard SQL within the Oracle Database ecosystem.</p><h3>Key Topics Covered</h3><ul><li>SQL fundamentals and syntax</li><li>Data retrieval using SELECT statements</li><li>Data manipulation (INSERT, UPDATE, DELETE)</li><li>Table and constraint creation</li><li>Managing database objects</li><li>Single-row and group functions</li><li>Joins and subqueries</li><li>Data aggregation techniques</li><li>Transaction control</li><li>Database security and access control</li></ul><h3>Target Audience</h3><p>This exam is ideal for:</p><ul><li>Database developers</li><li>SQL programmers</li><li>Data analysts</li><li>Database administrators</li><li>Application developers working with databases</li><li>IT professionals seeking database skills</li><li>Students pursuing database careers</li></ul><h3>Exam Format</h3><ul><li>Multiple-choice questions</li><li>Approximately 63 questions</li><li>Time limit: 120 minutes (2 hours)</li><li>Passing score: 63% (typically)</li><li>Proctored examination environment</li><li>Available in various languages</li></ul><h3>Skills Measured</h3><h4>Introduction to SQL (10-15%)</h4><ul><li>Understand relational database concepts</li><li>Execute basic SQL SELECT statements</li><li>Apply SQL operators and conditions</li><li>Sort and limit query results</li></ul><h4>Restricting and Sorting Data (15-20%)</h4><ul><li>Use conditional expressions</li><li>Implement complex filtering conditions</li><li>Utilize pattern matching with LIKE</li><li>Apply NULL handling techniques</li><li>Implement sorting and ordering</li></ul><h4>Single-Row Functions (15-20%)</h4><ul><li>Apply character, number, and date functions</li><li>Implement conversion functions</li><li>Use conditional expressions</li><li>Apply NULL-related functions</li></ul><h4>Group Functions (15-20%)</h4><ul><li>Use aggregate functions</li><li>Create grouped data with GROUP BY</li><li>Filter groups with HAVING clause</li><li>Apply nested group functions</li></ul><h4>Joins and Subqueries (20-25%)</h4><ul><li>Implement various join types (INNER, OUTER, CROSS)</li><li>Use self-joins and set operators</li><li>Create and use subqueries</li><li>Apply correlated subqueries</li><li>Utilize inline views</li></ul><h4>Data Manipulation and Transactions (10-15%)</h4><ul><li>Insert, update, and delete data</li><li>Implement transaction control</li><li>Apply data integrity concepts</li><li>Use database locks and concurrency</li></ul><h4>Data Definition Language (5-10%)</h4><ul><li>Create and modify tables</li><li>Define constraints and indexes</li><li>Manage schema objects</li><li>Implement database design principles</li></ul><h3>Preparation Resources</h3><ul><li>Oracle University training courses</li><li>Oracle Database documentation</li><li>Official Oracle certification preparation guides</li><li>Practice tests and exam simulations</li><li>Hands-on lab exercises</li><li>Oracle Learning Library resources</li><li>Community forums and study groups</li></ul>

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