# Db **DbOom** provides an efficient, powerful and thin layer over JDBC that significantly simplifies writing of database code. Using pure JDBC api correctly requires writing the same code snippets over and over again, what easily leads to unmaintainable application. Often there are run-time problems just because of incorrect database handling. *DbOom* introduces several smart façades that helps in writing smaller, cleaner and maintainable code. Moreover, *DbOom* is the mapper between object and relational world using plain SQL queries. It defines object-table mappings using annotations or naming convention. However, relationships are not pre-defined, they are set on very place where used. The best way how to think of *DbOom* is from the JDBC perspective: it is not a full-blown complex ORM library; instead, it is just a nice tool built over *Db* for efficient database mapping. ### Values * Significantly simplified JDBC. * Enhanced statements, named parameters. * Throws unchecked exceptions. * Fast, no performance loss, no \*QL parsing. * Debugging mode where all statement '?' are replaced with values. * Plain-old SQL is used, not proprietary \*QL. * Easy to learn and understand. * Annotation-based mapping (optional). * Mapping to types * Mapping 1-1 and 1-many relations (on-the-fly) * Template-SQL for queries aware of entities * Database auto-detection --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://db.jodd.org/master.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.