0
What else can I help you with?
What are Primary and Foreign Keys?
A primary key is a column which uniquely identifies the records in a table. In a broad sense, a primary key is the mixture of a unique key and an index: A collumn with a primary key is indexed to deliver a faster query, and doesn't allow duplicate values to ensure specific data. Most programmers recommend all tables having a primary key (and only one) to enhance the speed of queries and overall database performance. An example of a primary key may be found in a table named "departments," which might have a collumn named "department_number" that uniquely identifies each department in the table with a number. ---- A foreign key is a column (the child collumn) in a table which has a corresponding relationship and a dependency on another collumn (the parent collumn) that is usually in a different table. Parent collumns can have multiple child collumns, but a child collumn can only have one parent collumn. The child collumn is the collumn with the foreign key; the parent collumn does not have the foreign key "set" on it, but most databases require the parent collumn to be indexed. Foreign keys are made to link data across multiple tables. A child collumn cannot have a record that its parent collumn does not have. Say a table named "employees" has 20 employees (rows) in it. There are 4 departments in the "departments" table. All 20 employees must belong to a department, so a collumn in the "employees" table named "department" would point to the primary key in the "departments" table using a foreign key. Now all employees must belong to a department as specified by the "departments" table. If a department isn't specified in the "departments" table, the employee cannot be assigned to it.
The closed end of an air collumn is?
closed, no hole
Does a vertebral column have another name?
the spinal collumn (spine)
What is another name for worksheets in excel?
A spreadsheet or a sheet.A spreadsheet or a sheet.A spreadsheet or a sheet.A spreadsheet or a sheet.A spreadsheet or a sheet.A spreadsheet or a sheet.A spreadsheet or a sheet.A spreadsheet or a sheet.A spreadsheet or a sheet.A spreadsheet or a sheet.A spreadsheet or a sheet.
What is another name for worksheet?
A spreadsheet or a sheet.A spreadsheet or a sheet.A spreadsheet or a sheet.A spreadsheet or a sheet.A spreadsheet or a sheet.A spreadsheet or a sheet.A spreadsheet or a sheet.A spreadsheet or a sheet.A spreadsheet or a sheet.A spreadsheet or a sheet.A spreadsheet or a sheet.
What is more smallest a column or a row?
There are less cells in a spreadsheet row than in a spreadsheet column.There are less cells in a spreadsheet row than in a spreadsheet column.There are less cells in a spreadsheet row than in a spreadsheet column.There are less cells in a spreadsheet row than in a spreadsheet column.There are less cells in a spreadsheet row than in a spreadsheet column.There are less cells in a spreadsheet row than in a spreadsheet column.There are less cells in a spreadsheet row than in a spreadsheet column.There are less cells in a spreadsheet row than in a spreadsheet column.There are less cells in a spreadsheet row than in a spreadsheet column.There are less cells in a spreadsheet row than in a spreadsheet column.There are less cells in a spreadsheet row than in a spreadsheet column.
What does the insertion point indicate?
the location of the active cell by its collumn letter and row number.
What does insertion point indicate?
the location of the active cell by its collumn letter and row number.
Are Microsoft Excel and OpenOffice Calc are examples of spreadsheet software?
Yes, they are both electronic spreadsheet programs.Yes, they are both electronic spreadsheet programs.Yes, they are both electronic spreadsheet programs.Yes, they are both electronic spreadsheet programs.Yes, they are both electronic spreadsheet programs.Yes, they are both electronic spreadsheet programs.Yes, they are both electronic spreadsheet programs.Yes, they are both electronic spreadsheet programs.Yes, they are both electronic spreadsheet programs.Yes, they are both electronic spreadsheet programs.Yes, they are both electronic spreadsheet programs.
Can a single MySQL column be referenced as a foreign key to multiple tables?
No. A foreign key may only point to only one collumn on one other table, and a collumn may only have one foreign key reference assigned to it.
What is an external spreadsheet?
External means outside. An external spreadsheet is a spreadsheet that is not located in the spreadsheet file you have open at the moment.
Why use spreadsheet mode?
well a spreadsheet is what your making, spreadsheet mode is the view
