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A department controls a number of projects, each of which has a unique name, a unique number, and a single location. We store each employeea€™s name, social security number, address, salary, sex, and birth data.
We want to keep track of the dependents of each employee for insurance purposes.A  We keep each dependenta€™s first name, sex, birth date, and relationship to the employee. A relational diagram can also be created in Visio, which gives the user more flexibility in the arrangement and look of the database structure.
Database management is an important consideration in any organization where large amounts of data are stored, accessed and perhaps edited by a many people. Stack Overflow is a community of 4.7 million programmers, just like you, helping each other.


Not the answer you're looking for?Browse other questions tagged software-engineering or ask your own question. Entity-relationship diagrams, or E-R diagrams, are used to sketch out the framework for a database.
Each department has a unique name, a unique number, and a particular employee who manages the department.A  We keep track of the start data when that employee began managing the department.
An employee is assigned to one department, but may work on several projects, which are not necessarily controlled by the same department. The database management techniques used in these examples above would be very valuable to all operation shops in an Army unit.
Once the relationships are defined, a working database can be created using a database software, such as MS Access.


An operations officer could update training management, then automatically generate reports for the commander. Once a database is constructed in MS Access, relationships can between the data can be defined (e.g.
Structured Query Language (SQL) is a useful tool to pre-process datasets because it can handle complex data manipulation tasks and is widely support by most relational database management systems. SQL can be called from a Python script which adds the ability to automatically generate reports based on required information.



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