Data Definition Language (DDL) is a standard for commands that define the different structures in a database. DDL statements create, modify, and remove database objects such as tables, indexes, and users. Common DDL statements are CREATE, ALTER, and DROP.
A primary key is the column or columns that contain values that uniquely identify each row in a table. A database table must have a primary key for Optim to insert, update, restore, or delete data from a database table.
What is database software? Database software is used to create, edit, and maintain database files and records, enabling easier file and record creation, data entry, data editing, updating, and reporting.
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Q. | DBA stands for: |
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B. | Database administrator |
C. | Database backup |
D. | Database designer |
Answer» b. Database administrator View more Information and full forms for DBA |
Your responsibility as a database administrator (DBA) will be the performance, integrity and security of a database. You'll be involved in the planning and development of the database, as well as in troubleshooting any issues on behalf of the users.
The source of all data warehouse data is the____________. The most common source of change data in refreshing a data warehouse is _______. The data from the operational environment enter _______ of data warehouse.
Q. | ______________ is data about data. |
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D. | multidata. |
Answer» a. metadata. |
D) File Database is not a type of database.
DBA stands for: allows a system administrator to associate a function with a relation; the function returns a predicate that must be added to any query that uses the relation.
DBA stands for Database Administrators . DBA is used for specialized software to store and organize data. The role may include capacity planning, installation, configuration, database design, migration, performance monitoring, security, troubleshooting, as well as backup and data recovery.
A database management system (DBMS) that incorporates the relational-data model, normally including a Structured Query Language (SQL) application programming interface.
Data Definition Language (DDL) is a standard for commands that define the different structures in a database. DDL statements create, modify, and remove database objects such as tables, indexes, and users. Common DDL statements are CREATE, ALTER, and DROP.
Database Administrator (DBA) is usually described as an IT professional who manages Microsoft SQL Server, Oracle databases, MySQL, IBM DB2 and/or Postgres databases which includes installs relational database software, provisions users' access to the databases, secures data, tunes database performance, disaster
An entity in DBMS (Database management System) is a real-world thing or a real-world object which is distinguishable from other objects in the real world. For example, a car is an entity. An attribute of an entity gives us information about the characteristic features of an entity.
In SQL, which of the following is not a data definition language commands? Explanation: With RENAME statement you can rename a table. RENAME, REVOKE and GRANT are DDL commands and UPDATE is DML command.
You can study these concepts in any order, but it's probably best to start from the top and work your way down, since many concepts build on understanding units, conversion, and how atoms and molecules interact.
Simplification will be an important topic on all competitive exams like SBI PO, SBI Clerk, IBPS PO, IBPS Clerk, SSC CGL, SSC CHSL, and others. Simplification means finding the solution from the complex calculation. So understanding the significance of simplification will enhance your overall mental prowess.
Oracle supports many “Schemas” with the instance whereas SQL server offers “Schemas” within each user database. Oracle allows database, full, file-level, incremental & differential backups on the other hand, SQL server allows full, partial, and incremental backups.
There are seven types of proteins: antibodies, contractile proteins, enzymes, hormonal proteins, structural proteins, storage proteins, and transport proteins.
In India GST rate for various goods and services is divided into four slabs: they are 5% GST, 12% GST, 18% GST, & 28% GST.
Revision of GST Rates announced in the 37th GST Council Meeting.
Goods or commodities | New rate | Old rate |
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Hotels with Room Tariff of Rs.7501 and above | 18% | 28% |
Dated : 14-May-2022
Category : Education
Tags : Key In Dbms Primary Key Uniquely Identify Identify Each Row Database Table Optim To Insert Database A Software Database Software Maintain Database Files Enabling Easier File