Data exchange facilitated

Facilitated Diacylglycerol Exchange between Hemolymph Lipophorins

Manduca sexta hemolymph lipid transfer particle (LTP) is a very high density lipoprotein (d = 1.23 g/ ml) containing 14% lipid and 5% carbohydrate. Each of three apoprotein components, apoLTP-I (Mr 320,000), apoLTP-I1 (Mr = 85,000), and apoLTP-I11 (M. = 55,000), is glycosylated. Carbohydrate analysis revealed the presence of mannose and N-acetylglucosamine in a ratio of 4.5:1. A native M, > 67...

Exchange-Repairs: Managing Inconsistency in Data Exchange

In a data exchange setting with target constraints, it is often the case that a given source instance has no solutions. Intuitively, this happens when data sources contain inconsistent or conflicting information that is exposed by the target constraints at hand. In such cases, the semantics of target queries trivialize, because the certain answers of every target query over the given source ins...

Foundations of Data Exchange

Enabling Secure Data Exchange

The emergence of diverse networked data sources has created new opportunities for the sharing and exchange of data. In support of this, a fruitful line of research has resulted in distributed data processing and integration systems [19, 17, 29, 30, 3]. However in practice, fear of unauthorized disclosure or malicious tampering requires that data stay safely behind firewalls or remain protected ...

Approximate Data Exchange

We introduce approximate data exchange, by relaxing classical data exchange problems such as Consistency and Typechecking to their approximate versions based on Property Testing. It provides a natural framework for consistency and safety questions, which first considers approximate solutions and then exact solutions obtained with a Corrector. We consider a model based on transducers of words an...