41. As brothers, they were able to harness a natural synergy, which was the primary key to their success. 42. In our table representing students on modules our primary key would now be firstName + lastName + moduleCode. 43. Each record must have a unique, primary key which determines where in a file that record is stored. 44. My question is : will I gain in performance speed with the primary key vs . no primary key? 45. My question is : will I gain in performance speed with the primary key vs . no primary key ? 46. In a relational table the primary key is an ideal candidate for becoming the subject of the extracted triples. 47. The dbm manages associative arrays of arbitrary data by use of a single key ( a primary key ). 48. Due diligence should be applied when deciding on the immutability of primary key values during database and application design. 49. A key that can be used to uniquely identify a row in a table is called a primary key . 50. Some database systems even imply that values in primary key columns cannot be changed using the UPDATE SQL statement.
