Database Single Quotes & Sayings

ThreadLocal, which allows you to associate a per-thread value with a value-holding object. Thread-Local provides get and set accessormethods that maintain a separate copy of the value for each thread that uses it, so a get returns the most recent value passed to set from the currently executing thread. Thread-local variables are often used to prevent sharing in designs based on mutable Singletons or global variables. For example, a single-threaded application might maintain a global database connection that is initialized at startup to avoid having to pass a Connection to every method. Since JDBC connections may not be thread-safe, a multithreaded application that uses a global connection without additional coordination is not thread-safe either. By using a ThreadLocal to store the JDBC connection, as in ConnectionHolder in Listing 3.10, each thread will have its own connection. Listing — Brian Goetz

Different databases are designed to solve different problems. Using a single database engine for all of the requirements usually leads to non- performant solutions; storing transactional data, caching session information, traversing graph of customers and the products their friends bought are essentially different problems. — Pramod J. Sadalage

I can't look at a stranger's face and think, She's smiling just like Amy. When Amy smiles like that she's happy, so this person is probably happy, too. Instead, I watch and evaluate, with a slightly anxious feeling. It's as if I have to build a behavior database for every single person I meet in life. When I encounter someone for the first time, the slate is blank and I don't know what to expect. — John Elder Robison

The new advocates of ID [Intelligent Design] ask that their ideas be judged by scientific, not religious, criteria. OK, let's see how well ID stacks up as a scientific alternative to Darwinism. To gauge how well ID is doing as a platform for scientific research, I logged into the best database of the biological literature. A search for keyword 'evolution' yielded 24,000 hits in the last decade. A search for 'intelligent design' yielded not a single piece of research. Evolution by natural selection remains the basis of every successful biological research program. — Chet Raymo