桑园

Publicly available information about the author writing under the name Sang Yuan is very limited; details such as identity, nationality, and dates of birth and death have not been clearly recorded. Based on the holdings in our database, Sang Yuan is associated with study materials for the National Computer Rank Examination Level 2 course on Access database programming, and appears as an author or compiler name in the exam-preparation category. Books of this kind typically follow the examination syllabus, systematically explaining basic database concepts, the design of tables and queries, the creation of forms and reports, and the use of macros and modules, while providing examples and exercises to help readers become familiar with question types and the operating environment. Owing to the scarcity of relevant material, it is difficult to introduce Sang Yuan's personal background or writing style in further detail; readers may refer to the book's chapter structure and explanatory approach to understand its orientation within computer exam preparation.