either or.
they both mean the same.
Terry Rollock was born in 1969.
Peter Rollock died in 1632.
Robert Rollock died in 1599.
a rowlock (UK) or an oarlock (US).
A rowlock or oarlock (US) is a brace that attaches an oar to a boat. When a boat is rowed, the rowlock acts as a fulcrum, and, in doing so, the propulsive force that the rower exerts on the water with the oar is transferred to the boat by the thrust force exerted on the rowlock.
An oar pin is also called a rowlock pin or a thole.
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 4 words with the pattern R--LOC-. That is, seven letter words with 1st letter R and 4th letter L and 5th letter O and 6th letter C. In alphabetical order, they are: raploch rollock rowlock rullock
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 16 words with the pattern -O--OC-. That is, seven letter words with 2nd letter O and 5th letter O and 6th letter C. In alphabetical order, they are: bollock bonnock concoct dornock gorcock hommock hoolock hordock jonnock nostocs pollock rollock rowlock sourock tombocs torgoch
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 9 words with the pattern -O-L-CK. That is, seven letter words with 2nd letter O and 4th letter L and 6th letter C and 7th letter K. In alphabetical order, they are: bollock cowlick hoolock pollack pollock potluck rollick rollock rowlock
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 18 words with the pattern R----CK. That is, seven letter words with 1st letter R and 6th letter C and 7th letter K. In alphabetical order, they are: rampick ransack ratpack recheck redback redneck restack restock retrack rimrock roebuck rollick rollock rowlock ruddock rullock runback ryepeck
Masonry units can be laid in several positions. For example, think of a pair of dice. Each face has a separate number on it. A brick is similar, but there are only 3 faces that are different sizes (since the direct oposite side is the same dimension) and each of those faces can be installed in two directions for a total of six different positions. These positions are called stretcher, header, rowlock, shiner, soldier, and sailer.http://www.oldvirginiabrick.com/technical/varied_brick_positions.HTML
A rowlock is the same--no matter what the database. SQLServer, Oracle, Informix, Tandem, etc. A database's management system, along with the Database Administrator, is responsible for "data integrity". Here's the scenario for a rowlock: Susan is responsible for updating the "sales" table for the day's previous sales activity. Since there are not many updates, she sometimes does the inserts/updates during core business hours. One of the current rows in the "sales" table needs the data updated. The database puts a "rowlock" on this row in this table until the update is committed. If Gina is doing a query (read only) on the "sales" table at the same time Susan is updating it, the row that is being updated is "locked" and Gina will see the "before image" of the row. Once Susan commits the update the row is no longer locked and, if Gina runs her query again, she will see the update.