char (10), employee char (6), payroll int) INSERT into depart SELECT ' A ', ' ZHANG ', 100INSERT into depart SELECT ' A ', ' LI ', 200INSERT into depart SELECT ' A ', ' WANG ', 300INSERT into depart SELECT ' A ', ' ZHAO ', 400INSERT into depart SELECT ' A ', ' DUAN ', 500INSERT into depart SELECT ' B ', ' DUAN ', 600INSERT into depart SELECT ' B ', ' DUAN ', 700 Department Employee salary A ZHANG 100A LI 200A WANG 300A ZHAO 400A DUAN 500B DUAN 600B D
database as described below, and manually spread these changes to the slave database.
Torename the datafile in the primary database, take the tablespace offline:1. Rename the data file in the master database and take the tablespace offline first:SQL> ALTER TABLESPACE tbs_4 OFFLINE;
Exit from the SQL prompt and issue an operating system command, such as the following UNIXmvCommand, to rename the datafile on the primary system:Exit the SQL prompt and rename the data file on the operating syste
record can only be connected to one record of another table, or one-to-many, and a table record is connected to multiple records from another table. The definition of "key" and "index" in MySQL is the same, so the foreign key and the primary key are also one of the indexes. The difference is that MySQL automatically indexes the primary keys for all tables, but the foreign key fields must be explicitly indexed by the user. This is the same as some of the more heavily feudal families, foreign chi
The Drop-down list is widely used in Excel. Making a Drop-down list in Excel can be made from data validation, by using a combo box in the form control and in the VBA Control Toolbox. Let's use a concrete example to illustrate (download the example file in XLS format at the end of the article). If we have a payroll every month, each employee's salary varies according to the number of days of attendance per month.
We need to make a "person
master database as described below, and manually spread these changes to the slave database.
To rename the datafile in the primary database, take the tablespace offline:
1. Rename the data file in the master database and take the tablespace offline first:
SQL> ALTER TABLESPACE tbs_4 OFFLINE;
Exit from the SQL prompt and issue an operating system command, such as the following UNIX mv command, to rename the datafile on the primary system:
Exit the SQL prompt and rename the data file on the opera
as the unix mv command:
% Mv/disk1/oracle/oradata/payroll/tbs_4.dbf/disk1/oracle/oradata/payroll/tbs_x.dbf
Rename the datafile in the primary database and bring the tablespace back online:
Run the following command on the master database to rename the data file and then bring the tablespace online:
SQL> ALTER TABLESPACE tbs_4 RENAME DATAFILE 2> '/disk1/oracle/oradata/p
MySQL discrete notes-foreign key Mysql foreign key
References: about MySQL foreign keys and mysql foreign key association creation
MySQL has the same definition of "key" and "index", so foreign keys and primary keys are also an index. The difference is thatMySQL automatically indexes the primary keys of all tables, but the foreign key field must be explicitly indexed by the user. // Check the Mysql manual and find that the INDEX is automatically created from MySQL 4.1.2.
Code for creating an i
us with a class library, which provides a class of employee. It is distributed to users by header files eemployee. h and class library. Lib.Obviously, we cannot obtain the source code of the class implementation.// Emplyee. hClass employee{Public:Virtual int salary ();};Class MANAGER: Public Employee{Public:Int salary ();};Class programmer: Public Employee{Public:Int salary ();};Our company established the following classes during development:Class mycompany{Public:Void
Introduction to OCP (OCP -- open-closed principle ):
Software entities (classes, modules, functions, etc.) shocould be open for extension, but closed for modification. The software entity should be open to the extension and closed to the modification, that is, the software entity should be extended without modification (which may be achieved through the proxy mode in. net. Open for extension: when new requirements arise, you can expand the existing model to achieve the goal. Close for modificati
following payroll package already contains the Employee class, then add a Boss class to the payroll package. Boss class refers to the Employee class can not use the payroll prefix, Boss class examples are as follows (boss. java file):
Package payroll;public class Boss{public void Payemployee (Employee e){E.mailcheck (
. this is the same as some of the more heavily feudal families, foreign children (daughter-in-law, inverted into) are generally not respected.Vulgar Example:Examples of one-to-one relationships between tables:There are two tables, the first of which is the basic table that records how many people are in the company, who they are, the employee number and the employee's name. Another table records how much wages are paid to users each month, so-called payroll
How to use Excel to make payroll, maybe some netizens have been using for a long time, but how to make a beautiful pay bar faster and better, see the author's method.
"Little problems to the old financial", perhaps you have been working in the financial mouth for many years, maybe you have to face Excel every day, maybe you have been accustomed to using the salary list to do employee payroll statistics and
grouping by department, there are 3 numbers in the technical part group, there are 2 numbers in the Sales section group, which do you let the database show?If you assume that you use the aggregate function after count (number), for each department group, there is only one value-the number of people under that department: Under the actual situation below, we hope to find out the name, department, and salary of each department, the highest wage of the person. Shit, a frustrated. The first comba
generally used to add similar inspection steps in multiple places. Once the consistency check process has been adjusted, it will inevitably result in multiple local modifications, not only increasing the workload, but also not guaranteeing the correctness of each inspection step. The application of triggers should be placed on the key, multi-initiator, high-frequency access data tables, excessive use of triggers, will increase the database burden, reduce database performance. Discarding the use
the outsourcing, the storage of the libraryItem scheduling, inventory counting, real-time inventory(4), production management product BOM, the main production plan, MRP material requirements, production process list, production picking, workshop control, production return, production storage(5), production management finished product inspection, inspection report, quality analysis, passing rate statistics(6), receivable management receivable documents, collection and settlement, collection and
select the Custom option to open the Customize dialog box. In the Commands tab, select the New menu item under Categories, and then drag new menu under Commands to the menu bar.
Press the Change Selection button to enter a name (such as "common documents") in the Name box of the pop-up menu.
2. Select one of the following categories (such as the Insert option) on the right, under command, select an item (such as the hyperlink option), drag it to a new menu (a common document), and name it (su
the Custom option to open the Customize dialog box. In the Commands tab, select the New menu item under Categories, and then drag new menu under Commands to the menu bar.
Press the Change Selection button to enter a name (such as "common documents") in the Name box of the pop-up menu.
2. Select one of the following categories (such as the Insert option) on the right, under command, select an item (such as the hyperlink option), drag it to a new menu (a common document), and name it (such as "
), drag it to a new menu (a common document), and name it (such as "payroll", etc.), and create the first workbook document list name.
Repeat the above action, add more than a few document list names.
3. Select a menu item in the Common document menu (such as "payroll", etc.), right-click the mouse, and, on the pop-up shortcut menu, select the Assign hyperlink → open option to open the Assign Hyperlink di
Tags: default 3.3 payroll 10gcat sel data unlimited count 0. Retrieving single-line data 0.1 using scalar variables to accept data Example 1:7788 declare v_ename emp.ename%type; V_sal Emp.sal%type; Begin Select Ename,sal into V_ename,v_sal from EMP where empno=no; Dbms_output.put_line (' Clerk number: ' | | no| | ' staff name: ' | | V_ename); End; 0.2 Embedded SELECT statement Note: When using the SELECT INTO statement, you must return a
relative to the middleware, it is not easy to write uniform data consistency check codes, which are generally used to add similar inspection steps in multiple places. Once the consistency check process has been adjusted, it will inevitably result in multiple local modifications, not only increasing the workload, but also not guaranteeing the correctness of each inspection step. The application of triggers should be placed on the key, multi-initiator, high-frequency access data tables, excessive
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