Pass the Oracle MySQL Developer 1z0-909 Questions and answers with CertsForce

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Questions # 1:

Which two are true about MySQL Document Store?

Options:

A.

It helps to store data items in a schema-less key-value store.


B.

It can store documents greater than 4 GB.


C.

It depends heavily on strictly typed data.


D.

It allows one to bypass the SQL layer of the server.


E.

There is no access to relational tables.


Expert Solution
Questions # 2:

Examine these MySQL Shell statements:

Question # 2

What is the true about the attempts to add document to the collection?

Options:

A.

All documents are added without any error or warning.


B.

First three documents are added, then different number of fields cause an error.


C.

First two documents are added, then mismatched field names cause an error.


D.

First two documents are added, then mismatched field names cause a warning.


E.

All documents are added and cause a warning.


Expert Solution
Questions # 3:

Examine these statements:

SET collation_connection=utf8mb4_0900_as_cs;

SELECT STRCMPCAlice', UCASE ('Alice* )) ;

What is displayed?

Options:

A.

0


B.

ERROR: 1267 (HYOOO): Illegal mix of collations


C.

-1


D.

NULL


E.

1


Expert Solution
Questions # 4:

Which two are true about MySQL connectors?

Options:

A.

Connectors must be installed on both the client and server hosts.


B.

Connector/J is based on Connector/C.


C.

Connector/ODBC is available on Unix, Windows, and MacOS X.


D.

Connector/NET runs on the Windows platform only.


E.

Connector/Python is released in precompiled binary and source code.


Expert Solution
Questions # 5:

Examine the statement which executes successfully:

SET sql_mode=' NO_ENGINE_SUBSTITTJTION' ;

You try to create a table with a storage engine that is not available. What will happen?

Options:

A.

An error occurs and the create table statement fails.


B.

The server will create the table but it will be unusable until the specified storage engine is available.


C.

The server will create the table but report an error when the first attempt to insert a row is performed.


D.

The server will create the table using the default storage engine.


Expert Solution
Questions # 6:

What is an advantage of using mysqli in PHP programs rather than using PHP Data Objects (PDO)?

Options:

A.

mysqli supports object oriented programming.


B.

mysqli can access databases from other vendors.


C.

mysqli supports non blocking, asynchronous queries.


D.

mysqli includes X DevAPI functions.


Expert Solution
Questions # 7:

Examine these statements which execute successfully:

Question # 7

Now, examine this query:

Question # 7

What is the result?

Options:

A.

It inserts a row with a warning.


B.

It inserts a row with no error or warning.


C.

It inserts a row with an error.


D.

It fails with an error.


E.

It fails with a warning.


Expert Solution
Questions # 8:

Examine this statement:

Question # 8

Options:

A.

Inserting COMMIT; SET @m :=: before line 4


B.

user who creates the procedure needing the create and execute privileges


C.

user who creates the procedure needing the create routine privilege


D.

inserting USE ; before line 3


E.

Inserting DEFINER 'username '@' localhost' clause into the CREATE PROCEDURE statement


Expert Solution
Questions # 9:

Examine this table definition:

Question # 9

The table must always remain a valid document store collection. What restriction does this impose on any added column?

Options:

A.

The column must be a generated column referencing any attribute of doc.


B.

The column must have a default value.


C.

The column must be used in a unique constraint.


D.

The column must be a generated column referencing only an existing attribute of doc.


E.

The column must be indexed.


Expert Solution
Questions # 10:

You must write a statement that combines the first_name and last_name columns from the

employees table as "last_name, first_name."

Which two statements will do this?

Options:

A.

SELECT last_name + ', ' + first_name FROM employees;


B.

SELECT CONCAT_WS(', ',last_name,first_name) FROM employees;


C.

SELECT GROUP_CONCAT(last_name, first_name) FROM employees;


D.

SELECT last_name, ‘ , ',first_name FROM employees;


E.

SELECT CONCAT(last name,', ',first_name) FROM employees;


Expert Solution
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