Database is one thing and tables another. If your trying to view data from a table, you should contact your database admin and or if you have connectivity, use A tool called Toad ( http://www.toadsoft.com) This tool will allow you to browse the data.
The mainly used databases are Microsoft SQL Server, Oracle, and MySQL. All three of these are relational databases and could easily handle databases containing millions of records.
Details on Oracle certification exams, it's content, questions and their answers can be found at exambraindumps websites. There are 3 levels in oracle Certification exam. First is Associate level, which is an entry level. In this level, it'll explain all the basics of Oracle and SQL databases. All the fundamentals of Oracle are provided in associate level. This Level Certification known as Oracle Certified Associate DBA. Second level is professional level, on which advanced level fundamentals of Oracle Database are provided, with that Performance Tuning on Oracle Databases. Top level, is the Oracle Certified Master Certification, which provide the most advanced level knowledge to various oracle certified professional. All these exams are conducted by Prometric at various Prometric Test Centers across the globe.
A directory for Oracle is created on the Unix OS. There is a "OFA" which is Oracle's standard directory structure. One of the reasons for adhering to this OFA is ease of administration. All Oracle databases are set up the same--therefore, a new DBA knows where to look for certain files in specific places. The Unix System Administration creates an Oracle DBA account. That account is allowed to create directories under an Oracle/database designated section only.
They have their own DBMS called Big Table. Follow thi slink to know more: http://stackoverflow.com/questions/362956/what-database-does-google-use
MySQL is a database management system designed to manage relational databases. It is an open source software operated by Oracle. MySQL gives you the ability to modify its source code to suit your needs. To implement data-related tasks in MySQL databases you could use some database GUI, for example dbForge Studio for MySQL.
Disadvantages of Oracle PLSQLIf you're just running Oracle databases, there are no major disadvantages to using PL/SQL as long as you're aware of its limitations.Proprietary to OraclePL/SQL is proprietary to Oracle which means if you were to change database vendors then you would have to re-write all your Oracle PL/SQL programs. Also if you use a mixture of databases or develop applications to run on different databases, you will either have to support lots of source code or write your applications in a database-neutral language like Java, VB or C and use the APIs to access the database.Poor I/O FeaturesThe other limitation of Oracle PL/SQL is that there is very little support for i/o either to read/write files or to read from or write to a user interface. The rationale behind this is that PLSQL is designed for manipulating information from the database and not for processing files or communicating with users. These operations are possible - they just require a little bit more effort!
The oracle answers all. :D
a computerized Library "card catalog"a store inventory control systeman employee payroll systemsocial security's income & benefits check tracking systemIRS tax return records systemcensus bureau statistics filesetc.
SQL (Structured Query Language) is a standard language used to communicate with and manipulate relational databases. It allows users to retrieve, insert, update, and delete data from databases using specific syntax and commands. SQL is used widely by database administrators, developers, and data analysts for managing and querying relational databases efficiently.
People create databases. If you have a list of names of your friends on paper or in your phone, that is a database that you have created. Businesses create them to store information on things like their staff or products they sell or their customers. Doctors and hospitals have ones for patients. Schools, colleges and universities have ones for their students. All sorts of people and organisations have them. Some software companies create software to create databases like Oracle or Microsoft Access etc.
Oracle Express is a rapid development tool for Web applications for the Oracle database. It is a fully supported, no cost option available with all editions of the Oracle database.
The Oracle system architecture will depend on the Oracle products used and their implementation. Full details of all of Oracle's products and how they should be implemented are available from their website.