Answer:
ExChunking is a good strategy for completing large assignments because it makes the work
less boring.
more thorough.
less difficult.
more manageable.planation:
Explanation: less difficult (C)
Answer:
1010 0111 1101 1111
Explanation:
A = 10 in decimal = 1010 in binary
7 = 7 in decimal = 0111 in binary
D = 13 in decimal = 1101 in binary
F = 15 in decimal = 1111 in binary
Therefore 0xA7DF = 1010 0111 1101 1111 in binary
Answer:
c. Attribute constraints
Explanation:
A data catalog identifies all of the following, except: "Attribute constraints"
The above statement is TRUE because a Data Catalog, a metadata management service, operates by searching for key data, understand and manage data for usefulness.
Data Catalog checks on the BigQuery datasets, tables, and views and checks both technical and business metadata by identifying the following attributes:
1. Data type
2. Range of values
3. Value for Instructor ID
Answer:
b. foreign key
Explanation:
In the database world, a foreign key is a field on one table and a primary key for another table. The purpose of a foreign key is to provide linkages between two or more tables. Given two tables A and B, and making A the point of reference, a primary key is a field that is unique in A while a foreign key is unique in B.
On another hand, a composite primary key is a combination of two or more fields/columns on database table that can be used to uniquely identify each row in the table.
In the database lingua, what we have is a unique key not a distinct key, though the two words are similar in meaning.
A duplicate key is used when an information may be repeatedly entered on a table.
So the correct option is a foreign key.
