What does the Oracle database actually do

What does a database developer actually do?

Database developer: the art of organizing and storing data clearly and making it securely accessible

With the advent of broadband communication, more and more companies are giving their employees or customers real-time access to various databases via the Internet. Professional database developers ensure that customer or product data can be clearly organized, saved and safely accessed. You design the database, choose the right implementation and ensure that the data is protected from loss and unauthorized access.

Database developer tasks

One of the main tasks of a database developer is to design or expand an efficient database. All important data must be recorded in a database system (DBS) and saved in a corresponding scheme. In addition, the system must be expandable and be able to merge data from other database systems (integration) or take over from other databases (migration). Most companies today have a lot of and very complex data to manage. The database developer must ensure that all this data is intelligently stored, processed and, if necessary, made available quickly to the authorized persons.

In order to record the requirements for a database system, the database developer is often dependent on cooperation with customers. The developer structures the company data and defines the indexing, procedures, functions and other parameters. He also carries out a cost-benefit analysis and calculates the effort required. On this basis, he creates a concept that, in addition to the technical requirements, also includes the requirements for data protection and data integrity. Together with future users, he designs the user interface and defines the guidelines for data backup. After installing and configuring the DBS, the developer instructs the users in handling the new database and creates user documentation and user guidelines, and trains the database administrator.

What skills does a database developer need?

Prerequisites for a job as a DBS developer are experience in the operation of complex relational databases such as DB2, My (SQL) or Oracle (or Oracle RDBMS) as well as the associated database management systems (DBMS). Knowledge of non-relational databases (NoSQL) is just as important as data preparation, various hardware and software, system analysis, cost calculation, project management, system integration and quality testing. A good knowledge of operating systems (Windows, Linux), .NET, application servers, interfaces and various IT management tools as well as important query languages ​​(SQL), programming languages ​​(C ++, Java, C #), page description languages ​​(HTML) and script languages ​​(Python, JavaScript, PHP).

Together with the customer or specialist departments, the DBS developer works out adequate solutions for processing the amount of data. In addition to good communication skills, the ability to work in a team, flexibility, analytical thinking and resilience to high psychological stress are particularly helpful. In addition, there is a good command of German and English, both spoken and written, and the willingness to continue training.

How do you become a database developer (apprenticeship / studies)?

Most developers start their careers with a degree in computer science or information technology at a German university or university of applied sciences. With a bachelor's or master's degree, for example, they can take the "Intelligent Systems" postgraduate course. Physical database design, database architecture, data warehouse, module design, modeling methods, data models and formats, data integrity, e-business, query languages ​​and application development, among others, are among the basic competencies of this training. It is also possible to access the mathematics, business informatics or economics courses from the side.

As a further career path, the DBMS specialist specializes in special database systems such as Oracle, MS SQL or SAP. In most cases, this specialist knowledge is imparted in advanced courses from Microsoft, Oracle or SAP. Specialist knowledge in design, development, administration and applications for Microsoft, Oracle or SAP databases are paid better than conventional work.

Further training to become a database developer

You can also become a database developer through further training. There are some distance learning courses for small and medium-sized tasks for further training as a database developer in MySQL or Access.

The Duration Such further training differs - anything is possible between 4 weeks and a few semesters. The costs of such training are often funded from various sources.

As Participation requirements A secondary school certificate, sound IT and often PHP or Java skills are expected here. Programming experience and a good knowledge of English are also important. The further training measures usually end with an examination at the responsible Chamber of Industry and Commerce. Often a completed professional training or a degree or sufficient professional experience in IT is expected.

The Course design often includes a few face-to-face appointments per month, followed by longer phases of self-study.

Content The training courses can include:

  • Relational database design
  • Design and maintenance of databases
  • Presentation, analysis and comparison
  • Data integrity
  • ER diagrams

Where can I work as a database developer? What salary can I expect?

Job and career opportunities for DB developers are very good at the moment. There are jobs for a database specialist in companies, banks, insurance companies, authorities, logistics, service providers and organizations. Database experts are in great demand, especially in large companies with many online platforms. Specializations as a data warehouse specialist (processing big data), data miner (developing behavior and strategies from data) and business intelligence specialist (systematic analysis and evaluation of data) are possible. Many developers later go into database administration.

Like all salaries in the IT industry, the payment of a DBMS specialist depends heavily on the state and the size of the company. The profession is best paid in Bavaria and Baden-Württemberg, with Saxony-Anhalt and Mecklenburg-Western Pomerania bringing up the rear. In the first few years of your working life you can look forward to a starting salary of 34,000 to 42,000 euros. After a while, the average salary increases to 48,000 euros. If you climb the career ladder one step higher, you will be remunerated for the work of a project manager or leading database developer with up to 72,000 euros. Experienced data warehouse managers earn around 80,000 euros, business intelligence specialists and data miners earn around 72,000 euros.