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  • What is cardinality in Databases? - Stack Overflow
    A source of confusion may be the use of the word in two different contexts - data modelling and database query optimization In data modelling terms, cardinality is how one table relates to another 1-1 (one row in table A relates to one row in tableB) 1-Many (one row in table A relates to many rows in tableB) Many-Many (Many rows in table A relate to many rows in tableB) There are also
  • How do I interpret precision and scale of a number in a database?
    Numeric precision refers to the maximum number of digits that are present in the number ie 1234567 89 has a precision of 9 Numeric scale refers to the maximum number of decimal places ie 123456 789 has a scale of 3 Thus the maximum allowed value for decimal (5,2) is 999 99
  • Core pool size vs maximum pool size in ThreadPoolExecutor
    What exactly is the difference between core pool size and maximum pool size when we talk in terms of ThreadPoolExecutor? Can it be explained with the help of an example?
  • MySQL maximum memory usage - Stack Overflow
    MySQL's maximum memory usage very much depends on hardware, your settings and the database itself Hardware The hardware is the obvious part The more RAM the merrier, faster disks ftw Don't believe those monthly or weekly news letters though MySQL doesn't scale linear - not even on Oracle hardware It's a little trickier than that The bottom line is: there is no general rule of thumb for
  • What is the maximum number of characters for a host-name in Unix?
    I am wondering what is the maximum number of characters for a host-name in a Unix system In addition is there any defined variable that can be used in Unix programming to call that number? (i e number of characters allowed for a host-name)
  • What is meant by diameter of a network? - Stack Overflow
    Definitions are The diameter of a graph is the maximum eccentricity of any vertex in the graph That is, it is the greatest distance between any pair of vertices To find the diameter of a graph, first find the shortest path between each pair of vertices The greatest length of any of these paths is the diameter of the graph
  • database - What is the difference between Max Cardinality and Min . . .
    A: You are correct in noticing that maximum cardinality is a more important characteristic of a relationship than minimum cardinality is All minimum cardinality tells you is the minimum allowed number of rows a table must have in order for the relationship to be meaningful
  • XML Schema minOccurs maxOccurs default values - Stack Overflow
    The maximum number of times an element may appear is determined by the value of a maxOccurs attribute in its declaration This value may be a positive integer such as 41, or the term unbounded to indicate there is no maximum number of occurrences The default value for both the minOccurs and the maxOccurs attributes is 1





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