4) Importing and exporting data
The task Importing and exporting data refers to how to insert and extract data from database in CSV text file format to and from the tables of the database.
Oracle, SQL Server, PostgreSQL, and MySQL have commands to import CSV text files where you must specify the delimiters that separate the rows and columns in the text file. Usually these commands are similar to LOAD FILE ... or the like. Both SQL Server and Oracle have some tools and wizards that allow for more specific options, such as SQL Server Data Import/Export Wizard, which evolved into the SQL Server Integration Services. A comparison of the level of difficulty to the task Importing and exporting data is presented in Table 1.
Table 1. Comparison of the level of difficulty to the task Importing and exporting data.
5) Programming and debugging
The task of programming and debugging refers to the programming mode in the database and also the difficulty associated with this programming and debugging task.
In this task the junior DBA took into account the different programming languages that can be used in the database other than the SQL dialect commonly used for programming a stored procedure or function. Oracle has a very strong integration with Java and SQL Server allows you to program in any language of the .NET environment. MySQL does not work very well with the programming of database routines in other languages, nor with the interactive mode of programming outside of a stored procedure or function. PostgreSQL uses the PL/pgSQL and its variations (PL/Tcl, PL/Perl and PL/Python) and also allows you to program in with the C language. A plus is the resources of debug tools provided by SQL Server and Oracle. A comparison of the level of difficulty to the task Programming and debugging is presented in Table 2.
Table 2. Comparison of the level of difficulty to the task Programming and debugging.
In the next section, we will discuss about Database migration and Security.