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In databases, properties are attributes or characteristics of database elements such as tables, columns, or indexes. They define specific settings or configurations that determine how the database or its elements behave. Properties can be used to control various aspects of data storage, retrieval, indexing, and performance within a database system.
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Database properties are also known as?
Database properties are also known as database attributes or characteristics. These properties describe the features and characteristics of the database, such as data types, constraints, relationships, and indexing among others. They are essential for defining the structure and behavior of a database system.
A database user manually notes that The file contains two hundred records each record containing nine fields Use appropriate relational database terminology to translate that statement?
The database contains a table with 200 rows (records) and each row has 9 columns (fields).
What is relation instance in DBMS?
In DBMS, a relation instance refers to a particular set of data rows within a database table at a given point in time. It represents the actual values stored in the database for that specific table. Each row in a relation instance corresponds to a record or tuple within the table, containing values for each attribute.
Why the data dictionary is sometimes called the database designer's database?
The data dictionary is sometimes called the database designer's database because it stores metadata about a database system's structure, constraints, and definitions. Database designers use this centralized repository to manage information about data elements, relationships, and properties, aiding in the design, development, and maintenance of databases. It serves as a valuable resource for understanding and documenting the database schema for efficient management and usability.
What does query mean in relation to databases?
In databases, a query is a request for information from a database. It is usually written in a special query language, such as SQL, and is used to retrieve, update, or manipulate data stored in the database. Queries allow users to interact with the database to extract the specific information they need.
What do you mean by database implicit properties?
The vital properties of a database are sometime refered as database implicit properties.
What are the properties of relations in database management?
1.each row must have unique(pk)in a relation. 2.database must have a unique name. 3.each column must have unique name.
What are the database properties?
ACID (Atomicity, Consistency, Isolation, Durability) is a set of properties that guarantee the database.
What has the author Kent Laver written?
Kent Laver has written: 'Semantic and syntactic properties of universal relation scheme data bases' -- subject(s): Database management
Distinguish between a relation and a relationship in database?
Relation is one record in the database or a tuple. Relationship is that how tables are connected to each other.
What are the Properties of relational database model?
The relational database model organizes data into relations or tables with rows and columns, providing a clear structure for data storage. It supports the concept of primary keys to uniquely identify each record in a table and foreign keys to establish relationships between tables. Additionally, it ensures data integrity through constraints like referential integrity and data normalization.
What are properties of database?
The interrelated data/records are stored in the database . Properties of database are that it maintains integrity of data, security of data, reduces problem in accessing the data.
What are the details about a file in Excel called?
Database Properties
Is it true that access helps you organize and identify your database by using database properties?
Yes, the properties help to identify your file. Access has facilities in the Database Tools to show the full design of the database and analyse it.
What do you mean by degree of relation in relational database management system?
It is the number of the attribute in the relation
What is another term for database properties?
Attributes is one term that can be use. The entire properties of all aspects of a database can be called a data dictionary.
Explain what is meant by repetition of information and inability to represent information Explain why each of these properties may indicate a bad relational database design?
Repetition of Information is a condition in a relational database where the values of one attribute are determined by the values of another attribute in the same relation, and both values are repeated throughout the relation. This is a bad relational database design because it increases the storage required for the relation and it makes updating the relation more difficult. - Inability to represent information is a condition where a relationship exists among only a proper subset of the attributes in a relation. This is bad relational database design because all the unrelated attributes must be filled with null values otherwise a tuple without the unrelated information cannot be inserted into the relation. Regards, Jose Deleep. S
