WIT Press


Hydrologic Data Management Using RDBMS With Differential-linear Data Storage

Price

Free (open access)

Paper DOI

10.2495/HY940382

Volume

8

Pages

10

Published

1994

Size

984 kb

Author(s)

G. Tsakalias & D. Koutsoyiannis

Abstract

Recently, Relational Data Base Management Systems (RDBMSs) have become popular for handling hydrologic time-series and running hydrologic applications. However, the standard data independence in such systems has many technical disadvantages in storing time-series data. An alternative technique, named Dif- ferential-Linear Data Storage (DLDS) technique, has been developed in the framework of the Hydroscope project (a Greek nation-wide database for hy- drometeorological information). This technique establishes a standardised repre- sentation of hydrologic time-series in a relational database environment, also providing a notable reduction in storage space. Instead of the standard SQL queries (select, inser

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