Table of Contents
- 1 What data structure is usually used for databases?
- 2 Why are table relationships useful in a database?
- 3 Which data structures are used by the database to efficiently search through a table?
- 4 Which of the following data structure is best suitable for databases and file systems?
- 5 Why is computerized database important in business and in our society?
- 6 Which of the following is an example of a data base in real life situation?
What data structure is usually used for databases?
The most frequently used data structures for one-dimensional database indexes are dynamic tree-structured indexes such as B/B+-Trees and hash-based indexes using ex- tendible and linear hashing.
Why are table relationships useful in a database?
It helps to further refine table structures and minimize redundant data. As you establish a relationship between a pair of tables, you will inevitably make minor modifications to the table structures. These refinements will make the structures more efficient and minimize any redudant data that the tables may contain.
What are the advantages of relational databases over traditional databases?
To sum up all the advantages of using the relational database over any other type of database, a relational database helps in maintaining the data integrity, data accuracy, reduces data redundancy to minimum or zero, data scalability, data flexibility and facilitates makes it easy to implement security methods.
How databases have been used in various real life scenarios?
Databases are used just about everywhere including banks, retail, websites and warehouses. Banks use databases to keep track of customer accounts, balances and deposits. Retail stores can use databases to store prices, customer information, sales information and quantity on hand.
Which data structures are used by the database to efficiently search through a table?
A database index is the most widely used data structure that improves the speed of operations on a database table. They can be created using one or more columns of a database table, as a basis for rapid random lookups and efficient access of ordered records.
Which of the following data structure is best suitable for databases and file systems?
Answer: A tree structure is the most common directory structure. B+ tree is best for keeping track of directories and files in a computer.
How do you relate tables in Access?
Create a table relationship by using the Relationships window
- On the Database Tools tab, in the Relationships group, click Relationships.
- On the Design tab, in the Relationships group, click Add Tables (or Show Table in Access 2013).
- Select one or more tables or queries and then click Add.
How is database related to a table?
Each table, sometimes called a relation, in a relational database contains one or more data categories in columns or attributes. The relationship between tables can be set via the use of foreign keys — a field in a table that links to the primary key of another table.
Why is computerized database important in business and in our society?
Database systems are very important to your business because they communicate information related to your sales transactions, product inventory, customer profiles and marketing activities. Databases help to make your business stronger, raising your ability to increase your profits.
Which of the following is an example of a data base in real life situation?
They virtually permeate our lives: Online stores, health care providers, clubs, libraries, video stores, beauty salons, travel agencies, phone companies, government agencies like FBI, INS, IRS, and NASA — they all use databases.