SQL injection is a common web hacking technique that can destroy databases. Malicious code is placed in SQL statements via web page input. Users enter SQL instead of their actual values
DROP TABLE IF EXISTS works for permanent tables. INFORMATION_SCHEMA provides cross-platform table deletion functionality. Temporary tables must be deleted from tempdb
CREATE TRIGGER creates new triggers for table, view, or foreign table operations. Triggers can fire before, after, or instead of specific operations. Triggers can be FOR EACH ROW or FOR EACH STATEMENT
Free trial version available for 30 days. Perpetual license included with subscription. Supports multiple source control systems including Git and SVN. Data Pump enables data migration between databases
ORA-01403 occurs when a query returns no results. Error message states "ORA-01403: no data found"
Database design organizes data according to specific models. Types include rational, graph, hierarchical and network models. Database schema shows relationships between entities using SQL and other languages