Index scans using a finite LRU buffer: a validated I/O model
ACM Transactions on Database Systems (TODS)
Differential files: their application to the maintenance of large databases
ACM Transactions on Database Systems (TODS)
Estimating block accesses in database organizations: a closed noniterative formula
Communications of the ACM
Estimating block accesses and number of records in file management
Communications of the ACM
Approximating block accesses in database organizations
Communications of the ACM
Analysis and performance of inverted data base structures
Communications of the ACM
File and Data Base Techniques
A Comprehensive Analytical Performance Model for Disk Devices under Random Workloads
IEEE Transactions on Knowledge and Data Engineering
On the Independence of Data Warehouse from Databases in Maintaining Join Views
DaWaK '99 Proceedings of the First International Conference on Data Warehousing and Knowledge Discovery
Information Sciences—Informatics and Computer Science: An International Journal
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The exact expression for the expected number of disk accesses required to retrieve a given number of records, called the Yao function, requires iterative computations. Several authors have developed approximations to the Yao function, all of which have substantial errors in some situations. We derive and evaluate simple upper and lower bounds that never differ by more than a small fraction of a disk access.