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Databases FAQs

What does a database consultant do?

A database consultant is a computer professional responsible for the health and maintenance of a computer database. A database consultant can develop computer databases, test changes made to databases, and evaluate additional IT needs.

What is a SQL consultant?

This type of consultant supports the Structured Query Language (SQL) server system. In this role, the consultant must be comfortable with SQL commands, SQL queries, and scalability and should be able to provide guidance and support for SQL database errors.

What is database development?

Database development involves the creation and maintenance of database management systems. These complex systems can handle large quantities of data, but to keep them performing well, they need to be modified, designed, developed, and updated regularly to ensure they’re reliable. Database development often involves the use of computer programming languages like C++, Java, JSON, HTML, DDL, SQLite, and DML.

What do database developers do?

Database developers are responsible for creating and executing databases. They help clients determine which database or language is the best option for their company. From the Microsoft SQL Server to PostgreSQL, database developers must identify and implement the best databases for their clients.

What are the types of databases?

Relational Database Management Systems (RDBMSs) are commonly used databases that store data according to a schema. The schema allows the data to be displayed as rows, tables, and columns that provide functionality through the SQL statements and is used to create, read, delete, and upload data. Popular relational databases include Oracle, MySQL, Microsoft SQL Server, and PostgreSQL.

The other type of database is called NoSQL, which is an alternative to relational databases. These non-relational databases are more rigid in their creation and performance, as the data type and the numeric value syntax need to be inserted into the database in particular ways. Popular NoSQL databases include MongoDB, CouchDB, and Couchbase.

What are the five steps of the database lifecycle?

The data lifecycle begins with developing a concept for a study and ends when the idea is fully developed and launched. The five steps are as follows:

  • Creation
  • Real-time logical design
  • Physical development and design
  • Implementation
  • Monitoring, adjustment, and maintenance