15 June 2016
An interesting tool for quality assurance of C compilers is Csmith, a generator of random C programs. I had come to appreciate it during the development of an optimization phase for a C compiler. This compiler features extensive regression tests, and the correctness of the translated programs is also tested using standardized benchmarks. The latter, […]
05 August 2014
Since PostgreSQL® 9.1, PostgreSQL® has implemented an interface for accessing external data sources. The interface defined in the SQL Standard (SQL/MED) allows transparent access to and manipulation of external data sources in the same manner as with PostgreSQL®-native tables. External data sources appear as tables in the respective database and can be used without restriction […]
09 September 2013
PostgreSQL® 9.3 ist da! Die neue Hauptversion bringt viele Verbesserungen und neue Funktionen. Dieser Artikel stellt einige der interssanten Neuerungen vor. Verbessertes Locking mit Fremdschlüsseln Fremdschlüssel sind unabdingbar für die referentielle Integrität der Daten. Allerdings brachten diese bis einschließlich PostgreSQL® 9.2 auch unter bestimmten Bedingungen Lockingprobleme bei UPDATE auf Spalten mit Fremdschlüsseln mit sich. Vor […]
09 September 2013
PostgreSQL® 9.3 ist da! Die neue Hauptversion bringt viele Verbesserungen und neue Funktionen. Dieser Artikel stellt einige der interssanten Neuerungen vor. Verbessertes Locking mit Fremdschlüsseln Fremdschlüssel sind unabdingbar für die referentielle Integrität der Daten. Allerdings brachten diese bis einschließlich PostgreSQL® 9.2 auch unter bestimmten Bedingungen Lockingprobleme bei UPDATE auf Spalten mit Fremdschlüsseln mit sich. Vor […]
09 September 2013
PostgreSQL® 9.3 is here! The new major version brings many improvements and new functions. This article introduces some of the interesting innovations. Improved Locking with Foreign Keys Foreign keys are indispensable for the referential integrity of the data. However, up to and including PostgreSQL® 9.2, these also caused locking problems under certain conditions when UPDATE […]
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