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| − | [[Main Page]] >> [[MongoDB|MongoDB]] >>[[MongoDB_Workbook|MongoDB Workbook]] >> MongoDB Documents
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| − | == Create a Collection ==
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| − |
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| − | If a collection does not exist, MongoDB creates the collection when you first store data for that collection.
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| − |
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| − | You can create one and set some options:
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| − |
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| − | db.createCollection('deptCollection', {autoIndexID : true})
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| − |
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| − | The following example will create a collection representing the DEPT/EMP tables seen in the [[Oracle_Sample_Data|Oracle Sample Data]].
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| − |
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| − | Add department 10 and it's employees:
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| − |
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| − | db.deptCollection.insert(
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| − | {
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| − | deptno: 10,
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| − | dname: 'ACCOUNTING',
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| − | loc: 'NEW YORK',
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| − | employees: [
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| − | {
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| − | empno: 7782,
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| − | ename: 'CLARK',
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| − | job: 'MANAGER',
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| − | mgr: 7839,
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| − | hiredate: new Date('1989-JUN-09'),
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| − | sal: 2450
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| − | },
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| − | {
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| − | empno:7839,
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| − | ename: 'KING',
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| − | job: 'PRESIDENT',
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| − | hiredate: new Date('1980-NOV-17'),
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| − | sal: 5000
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| − | },
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| − | {
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| − | empno: 7934,
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| − | ename: 'MILLER',
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| − | job: 'CLERK',
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| − | mgr: 7782,
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| − | hiredate: new Date('1985-JAN-23'),
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| − | sal: 1300
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| − | }
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| − | ]
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| − | }
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| − | )
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| − |
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| − | Next add department 20:
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| − |
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| − | db.deptCollection.insert(
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| − | {
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| − | deptno: 20,
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| − | dname: 'RESEARCH',
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| − | loc: 'DALLAS',
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| − | employees [
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| − | {
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| − | empno: 7876,
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| − | ename: 'ADAMS',
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| − | job: 'CLERK',
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| − | mgr: 7788
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| − | hiredate: new Date(),
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| − | sal: 1100
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| − | },
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| − | {
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| − | empno: 7902,
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| − | ename: 'FORD',
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| − | job: 'ANALYST',
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| − | mgr: 7566,
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| − | hiredate: new Date('1991-DEC-03'),
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| − | sal: 3000
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| − | },
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| − | {
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| − | empno: 7066,
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| − | ename: 'JONES',
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| − | job: 'MANAGER',
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| − | mgr: 7839,
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| − | hiredate: new Date('1991-APR-02'),
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| − | sal: 2975
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| − | },
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| − | {
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| − | empno: 7788,
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| − | ename: 'SCOTT',
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| − | job: 'ANALYST',
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| − | mgr: 7566,
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| − | hiredate: new Date('2015-OCT-16'),
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| − | sal: 3000
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| − | }
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| − | ]
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| − | }
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| − | )
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| − |
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| − | === Exercise ===
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| − |
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| − | Try and add Department 30. Note it has some values for the comm field.
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