What Is SQL guides beginners, experts, and intermediate readers through the most important aspects of declarative and procedural SQL. Knowledge gained includes the following 61656 Designing, building, and querying relational databases in the latest versions of oracle and SQL server databases 61656 Performing data-quality operations that eliminate corrupted data from databases 61656 Extending the functionality of SQL using PLSQL and programmable T-SQL 61656 Building and loading data warehouses without using an expensive ETL tool 61656 Troubleshooting and tuning SQL code and database designs 61656 Extensive use of built-in functions to retrieve and transform data 61656 Translating complex business rules into database constraints 61656 Creating advanced queries that answer complex business questions 61656 Manipulating data within tables 61656 Creating recoverable business transactions 61656 Perform nonstandard SQL operations such as deleting duplicate rows Obtain a free sample of oracle11