Preface
The traditional mechanism for storing computer data was data files. Data files have been immensely popular since the 1960s. The earlier commercially successful programming languages such as COBOL had extensive features related to file processing. In fact, even today, many major computer applications run on file-based computer systems.
However, all this has also changed in the last few decades. Database Management Systems (DBMS) has become a subject of great significance in the Information Technology industry. Most serious business applications need the presence of DBMS in some form or the other. DBMS is replacing files as the de facto standard for storing data that is medium/long term in nature. This is especially true in the case of ...
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