In programming and data management, "connect (Join)" refers to the process of combining data from two or more sources based on a related attribute. This is commonly used in databases where tables are linked through a common field, allowing users to retrieve comprehensive information from multiple datasets. For example, in a relational database, a Customer table can be joined with an Order table using a shared CustomerID. This enables the retrieval of all orders made by a specific customer, enhancing data analysis and reporting capabilities.