Describes study of 9- to 11-year-olds conducted in Great Britain that was designed to analyze the means by which elementary school children familiarized themselves with a large database. Types of error and frequency of occurrence are examined, query formulation is discussed, and the importance of keyboard skills is addressed. (nine references)…

Describes the unique reliability problems of very large databases that necessitate specialized techniques for hardware problem management. The discussion covers the use of controlled partial redundancy to improve reliability, issues in operating systems and database management systems design, and the impact of disk technology on very large…