Programming with Transactions Testing Commits and Rollbacks Almost all commercial-strength DBMS software supports the ability to undo the effects of a transaction before those effects are committed to the database. This is particularly useful when an operation must be performed to completion or not performed at all. You may undo these effects on the data using rollbacks. This portion of the exercise will familiarize you with rollbacks and commits.

里面有SSD4所需要的全部答案，包括所有的Exercise和所有的Quiz。

ssd7 exam2 Practical + choice 包含完整答案及解析以及题目，含有标准的 Multiple-Choice 答案。绝对值！

该文本对Skill User Guide进行了一些翻译，可以作为skill的初步知识的学习，希望大家有好的资源能够共享。

Choice金融终端使用指南2018版，详细介绍如何使用各个功能版块

FiberSIM基础模块官方指导参考书，通过实例一步步介绍FiberSIM的用法，可以边学边做。

SSD3所有exercise的答案，很全面

EDAskill365 2.4版本，用于cadence的二次开发软件，以及一些关于skill语言学习的中文文档.

计算机组成原理第二版英文原版的课后习题奇数题答案，官方发布

View Assessment Result: Multiple-Choice Quiz 2 Your performance was as follows: 1. The degree of a table is the number of _____ in the table. (a) keys (b) columns (c) rows (d) foreign keys Correct answer is (b) Your score on this question is: 10.00 Feedback: (b) -------------------------------------------------------------------------------- 2. The arity of a table is the number of _____ in the table. (a) keys (b) columns (c) foreign keys (d) rows Correct answer is (b) Your score on this question is: 10.00 Feedback: (b) -------------------------------------------------------------------------------- 3. What information is necessary when specifying the structure of a table? (a) the name of the table and the amount of storage space to be allocated to the table (b) the name of the table, the names of the table's attributes, the data types of the table's attributes, the formats of the table's attributes, and the maximum number of rows that the table can have (c) the name of the table and the names of the table's attributes (d) the name of the table, the names of the table's attributes, the data types of attributes, and the formats of attributes Correct answer is (d) Your score on this question is: 10.00 Feedback: (d) -------------------------------------------------------------------------------- 4. The foreign key in a table T1 _____ the same _____ as the corresponding primary key in table T2. must have, name need not have, name must have, domain (a) I, II, and III (b) I and II (c) I and III (d) II and III Correct answer is (d) Your score on this question is: 10.00 Feedback: (d) -------------------------------------------------------------------------------- 5. Which of the following SQL statements can be used to add a row to a table? (a) CREATE (b) INSERT (c) APPEND (d) ADD Correct answer is (b)