Final answer:
Design
DDL is used during the Design phase of an SDLC project to define database objects, which precedes the Implementation phase where the actual database is created.
Step-by-step explanation:
DDL, which stands for Data Definition Language, is written to define database objects during the Design phase of an SDLC (Software Development Life Cycle) project.
The Design phase is when the system and software design is prepared from the requirement specifications which were studied in the previous phase.
This phase serves as a blueprint for the implementation phase, where a physical model is built or a prototype is manufactured, while implementing the details that were selected through research and design choices.
During the Implementation phase, this design would be converted into the actual system by constructing the database schema using DDL.
The Implementation phase is when the actual code is written and when physical components, like a database, are created, and is typically done after finalizing the design specifications.
DDL (Data Definition Language) statements are written to define database objects such as tables, indexes, and constraints. These statements are typically used during the:
Design
In the Software Development Life Cycle (SDLC), the design phase involves creating a detailed technical design for the system based on the requirements specified in the analysis phase.
During the design phase, database designers use DDL statements to define the structure of the database, including tables, relationships, and constraints, based on the design specifications.
The implementation phase follows, where the designed system is built and implemented.