Most Popular Books by David Wingrove

The Ultimate Time Travel Thriller. The War For Time Continues. From the frozen tundra of 13th Century Russia to the battle of Paltava in 1709 and beyond, Otto Behr has waged an unquestioning, unending war across time for his people. But now a third unidentified power has joined the game across the ocean of time, and everything Otto holds dear could be unmade.

Spring 2201 -Spring 2203: The T'ang who make up the ruling Seven are struggling to maintain stasis and prevent change, as the "War That Wasn't A War" is fought within the levels of Chung Kuo's great world-spanning City: a war fought not with armies on battlefields but with an inventive evil -with bombs and betrayals, brutal assassinations and sly poisonings.

Peace has returned The year is 2206. After five years of war, the Seven are weak. They have lost three of their members, and the new T'ang are young and inexperienced. Once it was considered inconceivable but now, down in the lowest levels of the immense CIty, new currents of unrest have awoken. Currents that threaten to tear Chung Kuo apart. The fight endures But the demand for CHange is not the only threat to the Seven. Major Howard DeVore will use any means available to destroy them and their world-spanning City. And, from their own ranks, Wang Sau-leyan, appointed T'ang after the suspicious deaths of his father and elder brothers, plots to destroy them from within. The Seven are vulnerable and the forces against them continue to grow... Welcome to the Future

The Middle Kingdom The year is 2196. The Minister of the Edict - an official responsible for licensing all technology that could lead to Change - has been assassinated, and the great Empire of Ice, Chung Kuo, has finally been shaken after more than a century of brutally-enforced peace. Amid the chaos, the rebels seize the opportunity to affect Change. But the assassination was orchestrated far closer to home, leading them all into dangerous chain of betrayal and deceit that will plunge them all into the world-shattering War of Two Directions. Ice and Fire Spring 2201 - Spring 2203. The T'ang who make up the ruling Seven are struggling to maintain stasis and prevent Change as the war is fought within the levels of their great world-spanning city - a war fought with bombs and betrayals, brutal assassinations and sly poisonings. As the pressure mounts, a document is discovered by the Dispertionists that charts the true history of the world, and apparently its not exactly what the Ministry have told them...

There is only the war. Otto Behr is a German agent, fighting his Russian counterparts across three millennia, manipulating history for moments in time that can change everything. Only the remnants of two great nations stand and for Otto, the war is life itself, the last hope for his people. But in a world where realities shift and memory is never constant, nothing is certain, least of all the chance of a future with his Russian love...

Atrus, fils de Gehn, petit-fils d'Aitrus et de Ti'ana, n'a qu'un rêve : ressusciter D'ni dont l'histoire berça son enfance, la relever de ses ruines, effacer à jamais le souvenir du cataclysme qui anéantit la fabuleuse cité souterraine de ses ancêtres. Pour la repeupler, il lui faut rechercher à travers les Ages d'éventuels survivants de la Grande Peste. Atrus, sa compagne Catherine et leurs amis d'Averone s'en vont donc, grâce aux anciens livres D'ni, explorer les mondes lointains - mondes déserts, hostiles. Jusqu'au jour où ils découvrent Yerahnee. Là, tout n'est qu'harmonie, douceur, beauté. Les hommes y vivent en paix et sont gouvernés par un roi au visage d'ange. Un monde parfait. Mais cet Age possède une face cachée. Un envers diabolique. Et le rêve va se transformer en cauchemar. Pourtant, il était écrit qu'Atrus, héritier du Grand Monarque, viendrait, en messager de la plus glorieuse des civilisations, accomplir les anciennes prophéties...

Comment briser le pouvoir des Sept P Comment semer la discorde dans leurs rangs ? Comment détruire l'ordre du Zhongguo ? Howard DeVore s'y emploie : un attentat sanglant spectaculaire, la destruction des plantations vivrières d'Europe de l'Est... Le renégat, fin joueur de miel, prépare toujours plusieurs coups d'avance. Et les passions irrépressibles s'en mêlent aussi : celle, coupable, de Feiyan pour le tang d'Asie occidentale pourrait déchirer le Conseil suprême. Si elle venait à se savoir... Les haines et les désirs s'enflamment, les manœuvres s'accélèrent, les événements se précipitent. La Cité Terre court-elle à sa perte ? Li Yuan avait jadis fait un rêve : une montagne blanche d'ossements couvrait la plaine où se trouvait naguère la Cité... l'ouvre monumentale de David Wingrove atteint ici un apogée.

Abstract: "The basic building blocks of a database system are data items, database operations, transactions, and a concurrency protocol. A data item is a single piece of information, which can represent an integer, an image, or any abstract piece of information. A database operation can be a read operation where a data item is retrieved, a write operation where a data item is created or changed, or a delete operation where a data item is removed from the database. A transaction is a set of database operations performed together as a single operation. The concurrency protocol of a database ensures that transactions running simultaneously will not interfere with each other in a way that could jeopardize the consistency of the database. An acceptable protocol prevents information loss from lost updates and inconsistent views of the database, and also provides recoverability from failed database operations. These tasks will be defined in the section I of this paper. The ideal algorithm accomplishes these tasks with minimal network, processing, and storage overhead. In this paper, a new type of concurrency protocol will be presented. It is an optimistic, multi-versioning, dependency-based protocol. The protocol will be described, proven to fulfill the requirements described above, and compared to two of the more commonly used concurrency protocols."