Although a lot of file transfer is now handled using HTTP, FTP is still commonly used to transfer files behind the scenes for other applications -- e.g., hidden behind the user interfaces of banking, a service that helps build a website, such as Wix or SquareSpace, or other services.
Yes, there is a utility to read log files named LogRead. LogRead is a GUI utility to read, query, sort, merge and translate log files from all Progress components (e.g. AdminServer, AppServer, Messenger). It is provided as a diagnostic utility to assist in the analysis of log files. LogRead 1.1 is now available as source and can be downloaded from:
SQL Server Transaction Log File (LDF/.ldf) A log file or LDF(Log Database File) is a database file of Microsoft SQL Server, which stores all the transaction logs/events, which executes on the database. The main purpose of using log file in SQL Server is to rollback the database in case of data loss. Log file uses the same filename as its associated MDF file.