Random Analogies

Explicit Cursor

a: Explicit cursor ~
b: a temporary area

What: "Cursor is like a temporary area where you can process fetch the records and process then individually as required" The intent of this data structure is to select a subset of a table and put it into a separate memory area. This subset of the main table can then be processed by pl/sql 1 row at a time. The net benefit is improved performance, since a whole table does not need to be analyzed one row at a time.

Useful?
Writer: kz4ora
LCC:
Where:
Date: Aug 3 2010 9:18 AM



a: Aimless person ~
b: a traveller without any destination

What: "This is a wrong theory because an aimless life is, as someone commented, like a pendulum that only moves but reaches nowhere. An aimless person does many things, but the result or reward will be incomplete. An aimless person is like a traveller without any destination. He or she does not achieve anything in life."

Useful?
Writer: Sr. Rose Therese
LCC:
Where: Reference Link Has Evaporated
Date: Dec 30 2013 4:26 PM



a: love bond ~
b: a circle of never ending life

What:

"People on Earth need to know that love is forever. The love bond is like a circle of never ending life that nurtures us. It is important to respect the bond of love."


Useful?
Writer: Lynda J. Austin
LCC:
Where:
Date: Dec 9 2014 2:39 PM



a: relational database ~
b: cutting up a tree

What:

"In fact, consider data describing a real apple tree. Putting all the structural data of a tree into a relational database is like cutting the tree into a million pieces, with every part severed from every other part. Each leaf is cut off and given an ID number, with a set of attributes of that leaf, like size, number of lobes, etc. Similarly, all apples, twigs and branches are cut off. Then a set of tables is included to show which leaves went on which twigs, with other tables showing which twigs go on which branches, etc. With the resultant set of many tables it becomes quite a task to reassemble the tree. The good news is that if you want to build a hut from this tree, you can write the computer code to reassemble all the pieces to build a hut, or a anything else, perhaps with the leaves all stuck directly to the trunk, and the apples forming a heart on the door, which is made of branches. But if all you want is to reassemble it back into a tree, and in fact, if you never really wanted to cut up anything but only wanted to understand the tree better, then it might have been better not to cut it all up to start with! "


Useful?
Writer: John P. Pratt
LCC:
Where:
Date: Dec 25 2014 11:49 AM



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