File-Based and Directory-Based Structures

What is a file-based structure?

• A structure that organizes data into individual files

• A structure that organizes data into directories

• A structure that organizes data into tables

• A structure that organizes data into spreadsheets

What is the advantage of a file-based structure?

• Simple structure

• Reduced overheads

• Scalability

• Speed

What is the disadvantage of a file-based structure?

• Simple structure

• Reduced overheads

• Slow & resource intensive

• Directory-based structures

What is a directory-based structure?

• A structure that organizes data into individual files

• A structure that organizes data into directories

• A structure that organizes data into tables

• A structure that organizes data into spreadsheets

What is the advantage of a directory-based structure?

• Simple structure

• Reduced overheads

• Scalability

• Speed

What is the disadvantage of a directory-based structure?

• Simple structure

• Reduced overheads

• Inefficiency

• Increased collisions

What is the process of locating a record in a file-based structure?

• Open the file, read the file header, use a search key, retrieve the record

• Use the key value to find the record in the index, retrieve the record

• Open the file, read the file header, use a search key, retrieve the record, close the file

• Use the key value to find the record in the index, search the overflow area, retrieve the record

What is the process of locating a record in a directory-based structure?

• Open the file, read the file header, use a search key, retrieve the record

• Use the key value to find the record in the index, retrieve the record

• Open the file, read the file header, use a search key, retrieve the record, close the file

• Use the key value to find the record in the index, search the overflow area, retrieve the record

What is the purpose of an index in a directory-based structure?

• To store the paths of all files within the directory

• To store the metadata of each record

• To store the values of each record

• To store the search key for each record

What is a potential issue with directory-based structures in larger datasets?

• Simple structure

• Reduced overheads

• Inefficiency

• Increased collisions