70 top dbms multiple choice questions and answers for freshers and experienced pdf free download
- The ascending order of a data hirerchy is
- Which of the following is true of a network structure?
- Which of the following is a problem of file management system?
- One data dictionary software package is called
- The function of a database is ...
- What is the language used by most of the DBMSs for helping their users to access data?
- The model for a record management system might be
- Primitive operations common to all record management system include
- In a large DBMS
- Information can be transferred between the DBMS and a
- Which of the following fields in a student file can be used as a primary key?
- Which of the following is not an advantage of the database approach
- Which of the following contains a complete record of all activity that affected the contents of a database during a certain period of time?
- In the DBMS approach, application programs perform the
- A set of programs that handle a firm's database responsibilities is called
- Which is the make given to the database management system which is able to handle full text data, image data, audio and video?
- A record management system
- A command that lets you change one or more fields in a record is
- A transparent DBMS
- A file produced by a spreadsheet
- Which of the following is not true of the traditional approach to information processing
- Which of the following hardware component is the most important to the operation of database management system?
- Generalized database management system do not retrieve data to meet routine request
- Batch processing is appropriate if
- Large collection of files are called
- Which of the following is not a relational database?
- In order to use a record management system
- Sort/Report generators
- If a piece of data is stored in two places in the database, then
- An audit trail
- The relational database environment has all of the following components except
- Database management systems are intended to
- One approach to standardization storing of data?
- The language used application programs to request data from the DBMS is referred to as the
- The highest level in the hierarchy of data organization is called
- Choose the RDBMS which supports full fledged client server application development
- Report generators are used to
- A form defined
- A top-to-bottom relationship among the items in a database is established by a
- The management information system (MIS) structure with one main computer system is called a
- ------ responsible for authorizing access to the database, for co-ordinating and monitoring its use, acquiring software, and hardware resources, controlling its use and monitoring efficiency of operations.
- ------ is a property that describes various characteristics of an entity
- ------ level describes what data is stored in the database and the relationships among the data
- ------ denote derived attributes.
- A ------ is an association between entities
- ------ stores metadata about the structure of the data base
- ------ is a collection of operations that perform s single logical function in a database application
- The problem that is compounded when constraints involve several data items from different files are Called ------
- Ensuring atomicity is the responsibility of the ------ component
- ------ manages the allocation of the space on the disk storage and the data base structure used to represent information stored on disk
- ------ is the minimal super key
- ------ engine executes low level instructions generated by the DML compilier
- ------ responsible to define the content, the structure, the constraints, and functions or transactions against the database
- In ER model ------ denote derived attributes
- Foreign Key can be null
- All primary keys should be super keys.
- In Relational database Data is stored as record types and the relationship is represented by set types
- In Hierarchical database to get to a low-level table, you start at the root and work your way down the tree until you reach your target data.
- Using relational model we design conceptual database design
- Conceptual data model is the source of information for logical design phase
- Logical database design describes describes base relations, file organizations, and indexes that are used to achieve efficient access to data.
- Conceptual data modeling uses a high level data modeling concept of E-R Models
- Tables are required to have at least one column
- Logical data independence: Refers to the separation of the external views from the conceptual view
- Duplication of data is the disadvantage of DBMS
- Candidate key can have a null value
- Each program maintains its own set of data. So users of one program may be unaware of potentially useful data held by other programs this leads toDuplication of data
- A traditional database stores just data – with no procedures
- Simple Attribute composed of multiple components, each with an independent existence.
- Cardinality specifies how many instances of an entity relate to one instance of another entity.