The List_Tree - an innovative solution to customer portfolio representation

TJ Brown*, PL Kilpatrick, ITA Spence, D Crookes, PJ Murphy

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


The scale of BT's operations necessitates the use of very large scale computing systems, and the storage and management of large volumes of data. Customer product portfolios are an important form of data which can be difficult to store in a space efficient way. The difficulties arise from the inherently structured form of product portfolios, and the fact that they change over time as customers add or remove products. This paper introduces a new data-modelling abstraction called the List_Tree. It has been designed specifically to support the efficient storage and manipulation of customer product portfolios, but may also prove useful in other applications with similar general requirements.

Original languageEnglish
Pages (from-to)131-141
Number of pages11
JournalBt technology journal
Issue number2
Publication statusPublished - Apr 2000


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