Answer:
A - beta[0]
Explanation:
Beta[0] is the first element of the array, therefore automatically it is a valid element of beta. B and C are disqualified because you would not use single quotations when referring to an element. D is disqualified because the element starts at 0 (beta[0]) and has 50 elements declared, therefore it would end at 49, with beta[49] being the last element.
Explanation:
just go to settings and press the first thing it shows which is subscription
Answer:
To begin designing a relational database, one must define the Logical structure
Explanation:
Primary key: It is a unique key which uniquely identifies each record in a table. So this does not purely defines the relationship of the table during the beginning of the design.
Foreign key: It is a key which is closely connected to the primary key. The value of the column will accept values only if the values exists in the base table.
Physical structure: This is not going to be related to the relationship of the structure since the storage management is done by Operating system.
Only the logical structure clearly defines the relationship in the database. It will have information about the list of tables and fields. It will also mark the relationship between one table and another.
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Explanation dudjdb
