Final answer:
Constructing a Logical Data Model (LLM) for a company using existing files is achievable by analyzing, abstracting, and structuring the data within those files to define entities, attributes, and relationships.
Step-by-step explanation:
Yes, it is possible to construct a Logical Data Model (LLM) for a company using existing files. An LLM is a detailed visual representation of the data requirements and data structure of a business. While developing an LLM, it is crucial to analyze the current data stored in those files, identify relationships, and understand business rules. This process involves abstracting information from existing data which may be stored in various formats such as spreadsheets, databases, or documents.
The construction of an LLM starts with identifying entities, which represent objects or concepts relevant to the business. Attributes, which describe the properties of these entities, and relationships that illustrate how entities interact with one another, are then defined. By examining existing files, you can derive these elements, ensuring the LLM will reflect the real-world use of data within the organization.