41. Data Manipulation Language (DML) includes the command to enter and manipulate the Data, with these commands the user can perform the following,
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44. Creating and Using Database Defining its Structure (Schema). Designing Forms. Entering Data in it.
45. Defining its Structure (Schema). Here we list down all the field required in a database. Determine name type and size of each field. This information is captured in the system by the tool called schema builder. (schema builder help the user to define the database schema by prompting the user to enter the field type, field size and so on…) Modification is always possible be it is always better to design the database carefully in 1st instance and minimize the need to modify.