Data redundancy occurs when the same piece of data is stored in two or more separate places and is a common occurrence in many businesses.
Is the duplication of information or storing the same information in multiple places?
Redundancy
is the duplication of data or the storing of the same data in more than one place. … An entity is a person, place, object, event, or idea for which you want to store and process data. (each entity has its own table).
Which term can be described as the duplication of data and storing data in multiple locations?
An advantage of using the database approach to processing is that it facilitates consistency. Which term can be described as the duplication of data and storing it in multiple locations?
Redundancy wastes space
because you are storing multiple copies of the same data.
How are multiple entities stored in a database?
Each table in a database represents
two or more entities
. The relationship between different entities (in different tables) is handled by their common columns. users never interact with a database directly; database interaction is always through the DBMS.
Which database term is a person place object event or idea?
An entity
is a person place, object, event, or idea for which you want to store and process data. In database terms, the analogy to an ordinary paper file you might keep in a file cabinet or an accounting ledger. If a user is authorized to access database data, the user will always be able to make changes to the data.
What is duplication of data called?
Duplication of data is called
data redundancy
. … Data redundancy occurs when the same piece of data is stored in two or more separate places and is a common occurrence. Data redundancy can be found in a database, which is an organized collection of structured data that’s stored by a computer system or the cloud.
What is the difference between data redundancy and data duplication?
Redundancy is definitively a copy, but the access to either version of the data is
1 to 1 exactly the same to you
. The RDBM may choose one or the other based on different parameters such as how fast or whether the other computer network connection is down.
What are the three general problems associated with data redundancy?
Problems caused due to redundancy are:
Insertion anomaly, Deletion anomaly, and Updation anomaly
. If a student detail has to be inserted whose course is not being decided yet then insertion will not be possible till the time course is decided for student.
How can we prevent data inconsistency in database?
- Read a string.
- Expand abbreviations andacronyms.
- Remove accents: e.g., A substitutes A ́ and A, and a substitutes a ́ and a`.
- Shift string to lower-case.
- Remove stop words.
Which one of the following is a type of data manipulation command?
Which one of the following is a type of Data Manipulation Command? In data manipulation language, the command like
select, insert, update, and delete
is used to manipulate the information (or data, records), for example create a table, update table delete table, etc. Therefore the correct answer is C.
What is it called when a database is divided into segments and the segments are stored on different computers?
Terms in this set (20)
What is it called when a database is divided into segments and the segments are stored on different computers?
Distributed Database
.
What is an attribute database?
What Does Attribute Mean? … In a database management system (DBMS), an attribute refers
to a database component, such as a table
. It also may refer to a database field. Attributes describe the instances in the column of a database.
What is record in database?
Records in a database or spreadsheet are usually called “rows”. A record is
a collection of fields, possibly of different data types
, typically in a fixed number and sequence. … A record type is a data type that describes such values and variables.
What is a table that contains a repeating group called?
A relational table
is always in 1NF. Each column of a row has a single value of the column’s type. A non-relational database is “normalized” to tables ie 1NF (first sense of “normalized”) which gets rid of repeating groups.
Which statement will take away user privileges to the database?
| Question Answer | The ____ statement will take away user privileges to the database. REVOKE | In Access, a key symbol appears in the row selector of the field that is the ____ key. Primary |
|---|
When using an and Criterion The overall criterion is true if either of the individual criteria is true?
ANS:In an AND criterion, both criteria must be true for the compound criterion to be true. In an OR criterion, the overall criterion is true if either of the individual criteria is true.
