A dissertation can be viewed as a document that discusses your theory, and your research and how you intend to answer your problem or question. It will include your thesis statement, your literature review, and your methodology. A strong dissertation is going to have these components.

A dissertation is a written piece of work that usually takes about $4$ years to complete and must follow certain criteria in order to be deemed eligible for submission. This process requires you to have an idea or thesis statement as well as a problem statement and a purpose statement. This helps ensure that your writing is structured logically$.$

The theoretical framework should come first. It helps to lay out the structure of the thesis. It provides a foundation for understanding the thesis. Without the theoretical framework, the dissertation would have no place to stand on$.$ It is also very important to have the need for the study $($the problem statement$),$ and how it differs from others. It is also important to have a statement of purpose or reason for studying what you have chosen to study. A statement of purpose will help your readers understand why the topic is important, why the topic should be studied, and how the topic fits in the larger scheme of things. Without all of this, the reader can't really understand your work.