Found 3440 results for: Sql Lab Exam Questions And Answers
[DOWNLOAD] Sql Lab Exam Questions And Answers
SQL Server that includes an application database configured to perform transactional replication G. SQL Server that includes an application database configured to perform snapshot replication H. You need to ensure that data changes are sent to a...
Found: 24 May 2021 | Rating: 99/100
[FREE] Sql Lab Exam Questions And Answers | updated!
You need to be able to send the entire product catalog to all branch offices on a monthly basis. Two servers configured in the same data centerA primary server configured to perform log-shipping every 10 minutesA backup server configured as a warm...
Found: 24 May 2021 | Rating: 91/100
SQL Interview Questions And Answers
You administer a Microsoft SQL Server server that hosts a transactional database and a reporting database. The transactional database is updated through a web application and is operational throughout the day. The reporting database is only updated from the transactional database. Then, the reporting database fails at hours. You need to ensure that the reporting database is restored.
Found: 23 Apr 2021 | Rating: 86/100
You also need to ensure that data loss is minimal. What should you do? Restore the latest full backup, and restore the latest differential backup. Then, restore the latest log backup. Perform a point-in-time restore. Restore the latest full backup. Then, restore each log backup taken before the time of failure from the most recent differential backup. Then, restore the latest differential backup. Then, restore each differential backup taken before the time of failure from the most recent full backup. Perform a page restore. Perform a partial restore. Answer: C Question: 6 Note: This question is part of a series of questions that use the same set of answers choices.
Found: 10 Apr 2021 | Rating: 92/100
50 SQL Query Questions And Answers For Practice
The recovery model and backup schedule are configured as shown in the following table: At hours, you discover that pages 71, , and on one of the database files are corrupted on the reporting database. Answer: H Explanation: Restores a file or filegroup in a multi-filegroup database. Note that under the simple recovery model, the file must belong to a read-only filegroup. After a full file restore, a differential file backup can be restored. Page restore Restores individual pages. Page restore is available only under the full and bulk-logged recovery models. Piecemeal restore Restores the database in stages, beginning with the primary filegroup and one or more secondary filegroups. Question: 7 Note: This question is part of a series of questions that use the same set of answers choices. You need to ensure that the transactional database is restored. Answer: F Explanation: Requirements for Restoring Pages A page restore is subject to the following requirements: Bulk-logged Recovery Model and Page Restore For a database that uses the bulk-logged recovery model, page restore has the following additional conditions: Question: 8 Note: This question is part of a series of questions that use the same set of answers choices.
Found: 3 Apr 2021 | Rating: 93/100
400+ TOP DBMS LAB VIVA Questions And Answers
ServerA is the acting principal and ServerB is the mirror. You need to achieve this goal without delaying synchronization. Which three actions should you perform in sequence? To answer, move the appropriate actions from the list of actions to the answer area and arrange them in the correct order. You create an availability group named haContosoDbs. You need to configure the availability group to prevent data loss. In the event of a database failure, the designed secondary database must come online automatically. Which Transact-SQL statement should you use? Your company has a number of offices across the world connected by using a wide area network WAN. Connections between offices vary significantly in both bandwidth and reliability. You need to identify the correct replication method for each scenario.
Found: 5 Apr 2021 | Rating: 91/100
Microsoft 70-462 Exam Questions And Answers (PDF
To answer, drag the appropriate replication method or methods to the correct location or locations in the answer are Microsoft Exam Questions BrainDumps How To Pass Microsoft Exam? Each replication method may be used once, more than once, or not at all. Merge replication has been configured for an application that is distributed across offices throughout a wide area network WAN. Many of the tables involved in replication use the XML and varchar max data types. Occasionally, merge replication fails due to timeout errors. You need to reduce the occurrence of these timeout errors. Set the Merge agent on the problem subscribers to use the slow link agent profile. Create a snapshot publication, and reconfigure the problem subscribers to use the snapshot publication. Change the Merge agent on the problem subscribers to run continuously.
Found: 7 Apr 2021 | Rating: 92/100
Set the Remote Connection Timeout on the Publisher to 0. An agent profile contains a set of parameters that are used each time an agent runs: each agent logs in to the Distributor during its startup process and queries for the parameters in its profile. For merge subscriptions that use Web synchronization, profiles are downloaded and stored at the Subscriber. If the profile is changed, the profile at the Subscriber is updated the next time the Merge Agent runs.
Found: 7 Apr 2021 | Rating: 87/100
Top 50 SQL Interview Questions And Answers (2021 Update)
Replication provides a default profile for each agent and additional predefined profiles for the Log Reader Agent, Distribution Agent, and Merge Agent. In addition to the profiles provided, you can create profiles suited to your application requirements. An agent profile allows you to change key parameters easily for all agents associated with that profile. For example, if you have 20 Snapshot Agents and need to change the query timeout value the - QueryTimeout parameter , you can update the profile used by the Snapshot Agents and all agents of that type will begin using the new value automatically the next time they run. You might also have different profiles for different instances of an agent.
Found: 11 Apr 2021 | Rating: 91/100
SQL Interview Questions: 3 Tech Screening Exercises (For Data Analysts)
For example, a Merge Agent that connects to the Publisher and Distributor over a dialup connection could use a set of parameters that are better suited to the slower communications link by using the slow link profile. You use a database named AdventureWorks. You need to prepare the AdventureWorks database for database mirroring. ServerB will act as the mirror in a mirroring partnership along with ServerA. How should you configure HaContoso? Set the backup preference of HaContoso to Prefer Secondary. Set the backup preference of HaContoso to Secondary only. All rights reserveD. Started PM Error The package execution f A.
Found: 5 Apr 2021 | Rating: 91/100
SQL Query Questions And Answers For Practice For 2021
The step failed. Expand agent logging to include information from all events. Disable the Limit size of job history log feature. Configure event forwarding. Configure output files. The development team develops a new application that uses the SQL Server functionality. You are planning to migrate a database from SQL to SQL so that the development team can test their new application. You need to migrate the database without affecting the production environment. Test your preparation with actual exam questions.
Found: 17 Apr 2021 | Rating: 86/100
Top 50 SQL Server Interview Questions & Answers
Sign up for a trial plan. Question Names These premium questions are included in this pre-built test and can be added to any multi-skill test. Please sign up for a paid plan to view the questions in detail. On our paid plan, you can easily create your own custom multi-skill tests. It is increasingly becoming a performance bottleneck when it comes to scalability. Given its dominance, SQL is a crucial skill for all engineers. Conditions Conditions Conditional statements are a feature of most programming and query languages. They allow the programmer to control what computations are carried out based on a Boolean condition. Views Views A database view is a result set that is defined by a stored query, the results of which can can also be queried.
Found: 16 Apr 2021 | Rating: 90/100
SQL Query Interview Questions And Answers
As a fundamental and widely used database construct, it's useful for candidates to understand how and when they should be used. Constraints Constraints Constraints are used to define rules and relationships. They are applied to a dataset. It is an essential command when creating new database. Database schema Database schema A database schema defines how data is stored in a database. An SQL database uses a schema to define tables consisting of rows and columns that use fixed data types to store data. Formalizing how data is stored is the first step towards building an application or service. It is the most used SQL command. Indexes are used to retrieve data from the database more quickly.
Found: 9 Apr 2021 | Rating: 93/100
Top 65 SQL Interview Questions You Must Prepare In 2021
They are very important for making performant queries. Performance tuning Performance tuning The performance of an application or system is important. The responsiveness and scalability of an application are all related to how performant an application is. Each algorithm and query can have a large positive or negative effect on the whole system. Alter table statements are important for all programmers who have to modify existing schemas. Aggregation Aggregation An aggregate function is typically used in database queries to group together multiple rows to form a single value of meaningful data.
Found: 10 Apr 2021 | Rating: 89/100
Querying Microsoft SQL Server (70-461) Certification Exam Sample Questions
A good programmer should be skilled at using data aggregation functions when interacting with databases. Subqueries Subqueries Subqueries are commonly used in database interactions, making it important for a programmer to be skilled at writing them. Ordering Knowing how to order data is a common task for every programmer. Bug fixing Bug fixing Everyone makes mistakes. A good programmer should be able to find and fix a bug in their or someone else's code. We use it when we also want to show rows that exist in one table, but don't exist in the other table. Indexes Indexes The proper implementation and use of indexes are important for improving the performance of database queries.
Found: 23 Apr 2021 | Rating: 91/100
Microsoft Developing SQL Databases (70-762) Certification Sample Questions
It is often used when a report needs to be made based on multiple tables. It is a common command when making various reports. Update Update The UPDATE statement is used to modify the existing records in a table and is one of the most used operations for working with the database. Insert Insert Even though most database insert queries are simple, a good programmer should know how to handle more complicated situations like batch inserts. Joins Joins A normalized database is normally made up of multiple tables. Joins are, therefore, required to query across multiple tables.
Found: 23 Apr 2021 | Rating: 90/100
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Delete Delete The delete statement is used to delete records in a table and is one of the four basic CRUD functions create, read, update, and delete required for working with any persistent storage. It goes through conditions and returns a value. Database normalization Database normalization Database normalization is the process of structuring a relational database in accordance with a series of so-called normal forms in order to reduce data redundancy and improve data integrity. It should be used to avoid undesirable side-effects such as update, insert, and delete anomalies.
Found: 9 Apr 2021 | Rating: 89/100
SQL- Practical Exam Questions And Answer
What are the two authentication modes in SQL Server? There are two authentication modes — Windows Mode Mixed Mode Modes can be changed by selecting the tools menu of SQL Server configuration properties and choose security page. This is mainly used to capture and save data about each event of a file or a table for analysis. What is recursive stored procedure? SQL Server supports recursive stored procedure which calls by itself. Recursive stored procedure can be defined as a method of problem solving wherein the solution is arrived repetitively. It can nest up to 32 levels. What are the differences between local and global temporary tables? Local temporary tables are visible when there is a connection, and are deleted when the connection is closed.
Found: 2 Apr 2021 | Rating: 89/100
Free Microsoft Developing SQL Databases Sample Questions And Study Guide | EDUSUM | EDUSUM
A CHECK constraint can be applied to a column in a table to limit the values that can be placed in a column. Check constraint is to enforce integrity. Can SQL servers linked to other servers? What is sub query and its properties? A sub-query is a query which can be nested inside a main query like Select, Update, Insert or Delete statements.
Found: 27 Apr 2021 | Rating: 89/100
Top 50 SQL Interview Questions And Answers In 2021
This can be used when expression is allowed. Properties of sub query can be defined as A sub query should not have order by clause A sub query should be placed in the right hand side of the comparison operator of the main query A sub query should be enclosed in parenthesis because it needs to be executed first before the main query More than one sub query can be included 8. What are the types of sub query? There are three types of sub query — Single row sub query which returns only one row Multiple row sub query which returns multiple rows Multiple column sub query which returns multiple columns to the main query. With that sub query result, Main query will be executed. What is SQL server agent? Server agent's purpose is to implement the tasks easily with the scheduler engine which allows our jobs to run at scheduled date and time. What are scheduled tasks in SQL Server? Scheduled tasks or jobs are used to automate processes that can be run on a scheduled time at a regular interval.
Found: 26 Apr 2021 | Rating: 86/100
SQL Online Test - Tutorialspoint
This scheduling of tasks helps to reduce human intervention during night time and feed can be done at a particular time. User can also order the tasks in which it has to be generated. This function is used to return a non-null from more than one column in the arguments. FLOOR function is used to round up a non-integer value to the previous least integer.
Found: 15 Apr 2021 | Rating: 90/100
SQL Basic Aptitude Questions And Answers
Can we check locks in database? If so, how can we do this lock check? Yes, we can check locks in the database. What is the use of SIGN function? Example — SIGN returns -1 What is a Trigger? Triggers are used to execute a batch of SQL code when insert or update or delete commands are executed against a table. Triggers are automatically triggered or executed when the data is modified. It can be executed automatically on insert, delete and update operations.
Found: 5 Apr 2021 | Rating: 89/100
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Thus the given FDs is in 1NF. A dominant entity is the entity a on the N side in a 1 : N relationship b on the 1 side in a 1 : N relationship c on either side in a 1 : 1 relationship d nothing to do with 1 : 1 or 1 : N relationship What is Storage Manager? It is a program module that provides the interface between the low-level data stored in database, application programs and queries submitted to the system. What is Buffer Manager? It is a program module, which is responsible for fetching data from disk storage into main memory and deciding what data to be cache in memory. What is Transaction Manager? It is a program module, which ensures that database, remains in a consistent state despite system failures and concurrent transaction execution proceeds without conflicting.
Found: 13 Apr 2021 | Rating: 88/100
What is File Manager? It is a program module, which manages the allocation of space on disk storage and data structure used to represent information stored on a disk. What is Authorization and Integrity manager? It is the program module, which tests for the satisfaction of integrity constraint and checks the authority of user to access data. What are the four objectives of the selection of a data type? A data type should be selected so that all possible values are represented using minimal storage space. The data type should help to ensure data integrity and support all possible data manipulations i. Describe the four types of indexes. A unique primary index is unique and is used to find and store a row.
Found: 28 Apr 2021 | Rating: 88/100
Important Basic SQL Questions And Answers With Practice Questions Pdf
A nonunique primary index is not unique and is used to find a row but also where to store a row based on its unique primary index. A unique secondary index is unique for each row and used to find table rows. A nonunique secondary index is not unique and used to find table rows. What is denormalization and why would someone consider doing so? Denormalization is the process of taking normalized relations and changing them so that they are not longer normalized. This process may lead to anomalies and create data redundancy as negative consequences. However, the revised relations should improve database performance. Compare a hierarchical and network database model? The hierarchical model is a top-down structure where each parent may have many children but each child can have only one parent. This model supports one-to-one and one-to-many relationships. The network model can be much more flexible than the hierarchical model since each parent can have multiple children but each child can also have multiple parents.
Found: 17 Apr 2021 | Rating: 87/100
Top 50 SQL Interview Questions And Answers ( Update)
This model supports one-to-one, one to- many, and many-to-many relationships. Describe the differences between vertical and horizontal portioning. Horizontal portioning is where the rows in a relation are separated by some criteria and placed into a new relation or file with the same layout as the original relation in this case only the records in each file differ. Vertical portioning is where the columns in a relation are separated by some criteria and placed into a new relation or file with a different layout as the original relation. Explain the difference between a dynamic and materialized view. A dynamic view may be created every time that a specific view is requested by a user. A materialized view is created and or updated infrequently and it must be synchronized with its associated base table s. Discuss some of the techniques that can be used to tune operational performance.
Found: 16 Apr 2021 | Rating: 89/100
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