During the menstrual cycle, an egg is released from one of the womanâs ovaries and travels down the fallopian tube. The egg only lives for 24 hours after ovulation, and a sperm must meet the egg within that period for pregnancy to happen.uring the menstrual cycle, an egg is released from one of the womanâs ovaries and travels down the fallopian tube. The egg only lives for 24 hours after ovulation, and a sperm must meet the egg within that period for pregnancy to happen.
A set of attributes is called a relation schema (or relation scheme). A relation schema is also known as table schema (or table scheme).A relation schema can be thought of as the basic information describing a table or relation. It is the logical definition of a table.Relation schema defines what the name of the table is. This includes a set of column names, the data types associated with each column. set of attributes is called a relation schema (or relation scheme). A relation schema is also known as table schema (or table scheme).
Examples of schemata include rubrics, perceived social roles, stereotypes, and worldviews. 1  The concept of schema was first introduced into psychology by British psychologist Frederic Bartlett in Remembering: A Study in Experimental and Social Psychology (1932). Bartlett perceived organized knowledge as an elaborate network of abstract mental structures that represent a personâs understanding of the world, and he studied the impact of oneâs cultural background in rephrasing and memorizing certain events.